/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-send-receive-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-820ea7a [2022-02-18 14:56:45,147 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-18 14:56:45,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-18 14:56:45,175 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-18 14:56:45,190 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-18 14:56:45,191 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-18 14:56:45,192 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-18 14:56:45,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-18 14:56:45,193 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-18 14:56:45,194 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-18 14:56:45,197 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-18 14:56:45,200 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-18 14:56:45,201 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-18 14:56:45,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-18 14:56:45,203 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-18 14:56:45,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-18 14:56:45,209 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-18 14:56:45,214 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-18 14:56:45,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-18 14:56:45,215 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-18 14:56:45,216 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 [2022-02-18 14:56:45,241 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-18 14:56:45,241 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-18 14:56:45,241 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-18 14:56:45,241 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-18 14:56:45,242 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-18 14:56:45,242 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-18 14:56:45,242 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-18 14:56:45,242 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-18 14:56:45,242 INFO L138 SettingsManager]: * Use SBE=true [2022-02-18 14:56:45,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-18 14:56:45,243 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-18 14:56:45,243 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-18 14:56:45,243 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-18 14:56:45,243 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-18 14:56:45,243 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-18 14:56:45,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-18 14:56:45,244 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-18 14:56:45,244 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-18 14:56:45,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-18 14:56:45,244 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-18 14:56:45,244 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-18 14:56:45,244 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-18 14:56:45,244 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-18 14:56:45,244 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-18 14:56:45,244 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-18 14:56:45,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-18 14:56:45,244 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-18 14:56:45,245 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-18 14:56:45,245 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-18 14:56:45,245 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-18 14:56:45,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-18 14:56:45,245 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-18 14:56:45,245 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-18 14:56:45,245 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-18 14:56:45,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-18 14:56:45,414 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-18 14:56:45,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-18 14:56:45,416 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-18 14:56:45,416 INFO L275 PluginConnector]: CDTParser initialized [2022-02-18 14:56:45,417 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-send-receive-alt.wvr.c [2022-02-18 14:56:45,465 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/143c43711/87aa097ed9a049ebb59593c91145adf5/FLAGaf7daa709 [2022-02-18 14:56:45,847 INFO L306 CDTParser]: Found 1 translation units. [2022-02-18 14:56:45,848 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-send-receive-alt.wvr.c [2022-02-18 14:56:45,853 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/143c43711/87aa097ed9a049ebb59593c91145adf5/FLAGaf7daa709 [2022-02-18 14:56:45,865 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/143c43711/87aa097ed9a049ebb59593c91145adf5 [2022-02-18 14:56:45,867 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-18 14:56:45,868 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-18 14:56:45,870 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-18 14:56:45,870 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-18 14:56:45,872 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-18 14:56:45,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 02:56:45" (1/1) ... [2022-02-18 14:56:45,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ed6f62c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:56:45, skipping insertion in model container [2022-02-18 14:56:45,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 02:56:45" (1/1) ... [2022-02-18 14:56:45,879 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-18 14:56:45,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-18 14:56:46,088 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-send-receive-alt.wvr.c[2650,2663] [2022-02-18 14:56:46,097 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-18 14:56:46,104 INFO L203 MainTranslator]: Completed pre-run [2022-02-18 14:56:46,131 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-send-receive-alt.wvr.c[2650,2663] [2022-02-18 14:56:46,134 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-18 14:56:46,144 INFO L208 MainTranslator]: Completed translation [2022-02-18 14:56:46,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:56:46 WrapperNode [2022-02-18 14:56:46,144 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-18 14:56:46,145 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-18 14:56:46,145 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-18 14:56:46,146 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-18 14:56:46,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:56:46" (1/1) ... [2022-02-18 14:56:46,161 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:56:46" (1/1) ... [2022-02-18 14:56:46,185 INFO L137 Inliner]: procedures = 24, calls = 37, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 142 [2022-02-18 14:56:46,185 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-18 14:56:46,186 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-18 14:56:46,186 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-18 14:56:46,186 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-18 14:56:46,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:56:46" (1/1) ... [2022-02-18 14:56:46,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:56:46" (1/1) ... [2022-02-18 14:56:46,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:56:46" (1/1) ... [2022-02-18 14:56:46,203 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:56:46" (1/1) ... [2022-02-18 14:56:46,211 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:56:46" (1/1) ... [2022-02-18 14:56:46,213 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:56:46" (1/1) ... [2022-02-18 14:56:46,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:56:46" (1/1) ... [2022-02-18 14:56:46,216 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-18 14:56:46,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-18 14:56:46,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-18 14:56:46,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-18 14:56:46,217 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:56:46" (1/1) ... [2022-02-18 14:56:46,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-18 14:56:46,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:56:46,257 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) [2022-02-18 14:56:46,279 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 [2022-02-18 14:56:46,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-18 14:56:46,287 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-18 14:56:46,288 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-18 14:56:46,288 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-18 14:56:46,288 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-18 14:56:46,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-18 14:56:46,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-18 14:56:46,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-18 14:56:46,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-02-18 14:56:46,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-02-18 14:56:46,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-02-18 14:56:46,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-18 14:56:46,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-18 14:56:46,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-18 14:56:46,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-18 14:56:46,290 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-18 14:56:46,362 INFO L234 CfgBuilder]: Building ICFG [2022-02-18 14:56:46,363 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-18 14:56:46,598 INFO L275 CfgBuilder]: Performing block encoding [2022-02-18 14:56:46,669 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-18 14:56:46,669 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-02-18 14:56:46,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 02:56:46 BoogieIcfgContainer [2022-02-18 14:56:46,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-18 14:56:46,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-18 14:56:46,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-18 14:56:46,677 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-18 14:56:46,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 02:56:45" (1/3) ... [2022-02-18 14:56:46,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b58af31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 02:56:46, skipping insertion in model container [2022-02-18 14:56:46,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:56:46" (2/3) ... [2022-02-18 14:56:46,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b58af31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 02:56:46, skipping insertion in model container [2022-02-18 14:56:46,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 02:56:46" (3/3) ... [2022-02-18 14:56:46,681 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-send-receive-alt.wvr.c [2022-02-18 14:56:46,684 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-18 14:56:46,685 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-18 14:56:46,685 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-18 14:56:46,685 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-18 14:56:46,724 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,724 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,724 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,724 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,725 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,725 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,725 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,725 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,725 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,725 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,725 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,725 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,725 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,725 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,726 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,726 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,726 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,726 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,726 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,726 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,727 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,727 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,727 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,727 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,727 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,727 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,728 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,728 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,728 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,728 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,729 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,729 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,729 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,729 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,729 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,729 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,729 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,729 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,729 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,730 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,730 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,730 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,730 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,730 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,730 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,730 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,730 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,736 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,736 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,736 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,736 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,737 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,737 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,737 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,737 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,737 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,737 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,737 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,737 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,738 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,738 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,738 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,738 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,738 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,738 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,738 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,738 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,739 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,739 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,739 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,746 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,746 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,746 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,746 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,746 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,746 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,746 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,746 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,747 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,747 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,747 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,748 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,748 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,748 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,748 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,748 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,749 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:56:46,753 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-18 14:56:46,789 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-18 14:56:46,795 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, mLazyFiniteAutomaton=false, 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, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-02-18 14:56:46,799 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-18 14:56:46,808 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 129 places, 133 transitions, 282 flow [2022-02-18 14:56:46,874 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 676 states, 675 states have (on average 2.7111111111111112) internal successors, (1830), 675 states have internal predecessors, (1830), 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) [2022-02-18 14:56:46,877 INFO L276 IsEmpty]: Start isEmpty. Operand has 676 states, 675 states have (on average 2.7111111111111112) internal successors, (1830), 675 states have internal predecessors, (1830), 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) [2022-02-18 14:56:46,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-02-18 14:56:46,892 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:56:46,893 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] [2022-02-18 14:56:46,893 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:56:46,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:56:46,897 INFO L85 PathProgramCache]: Analyzing trace with hash -386855673, now seen corresponding path program 1 times [2022-02-18 14:56:46,903 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:56:46,903 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171634476] [2022-02-18 14:56:46,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:56:46,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:56:46,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:56:47,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:56:47,049 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:56:47,050 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171634476] [2022-02-18 14:56:47,050 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171634476] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-18 14:56:47,050 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-18 14:56:47,050 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-18 14:56:47,051 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309282153] [2022-02-18 14:56:47,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-18 14:56:47,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-18 14:56:47,055 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:56:47,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-18 14:56:47,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-18 14:56:47,100 INFO L87 Difference]: Start difference. First operand has 676 states, 675 states have (on average 2.7111111111111112) internal successors, (1830), 675 states have internal predecessors, (1830), 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 43.0) internal successors, (86), 2 states have internal predecessors, (86), 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) [2022-02-18 14:56:47,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:56:47,148 INFO L93 Difference]: Finished difference Result 676 states and 1686 transitions. [2022-02-18 14:56:47,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-18 14:56:47,150 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 43.0) internal successors, (86), 2 states have internal predecessors, (86), 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 86 [2022-02-18 14:56:47,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:56:47,167 INFO L225 Difference]: With dead ends: 676 [2022-02-18 14:56:47,167 INFO L226 Difference]: Without dead ends: 642 [2022-02-18 14:56:47,168 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 [2022-02-18 14:56:47,173 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-18 14:56:47,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 108 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-18 14:56:47,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2022-02-18 14:56:47,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2022-02-18 14:56:47,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 2.49609984399376) internal successors, (1600), 641 states have internal predecessors, (1600), 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) [2022-02-18 14:56:47,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1600 transitions. [2022-02-18 14:56:47,244 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1600 transitions. Word has length 86 [2022-02-18 14:56:47,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:56:47,245 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 1600 transitions. [2022-02-18 14:56:47,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 43.0) internal successors, (86), 2 states have internal predecessors, (86), 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) [2022-02-18 14:56:47,245 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1600 transitions. [2022-02-18 14:56:47,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-02-18 14:56:47,250 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:56:47,250 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] [2022-02-18 14:56:47,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-18 14:56:47,251 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:56:47,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:56:47,253 INFO L85 PathProgramCache]: Analyzing trace with hash -897208069, now seen corresponding path program 1 times [2022-02-18 14:56:47,253 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:56:47,253 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024351023] [2022-02-18 14:56:47,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:56:47,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:56:47,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:56:47,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:56:47,483 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:56:47,484 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024351023] [2022-02-18 14:56:47,484 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024351023] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-18 14:56:47,484 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-18 14:56:47,484 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-18 14:56:47,484 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554686000] [2022-02-18 14:56:47,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-18 14:56:47,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-18 14:56:47,485 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:56:47,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-18 14:56:47,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-18 14:56:47,486 INFO L87 Difference]: Start difference. First operand 642 states and 1600 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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) [2022-02-18 14:56:47,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:56:47,564 INFO L93 Difference]: Finished difference Result 1217 states and 3132 transitions. [2022-02-18 14:56:47,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-18 14:56:47,564 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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 88 [2022-02-18 14:56:47,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:56:47,568 INFO L225 Difference]: With dead ends: 1217 [2022-02-18 14:56:47,568 INFO L226 Difference]: Without dead ends: 864 [2022-02-18 14:56:47,570 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 [2022-02-18 14:56:47,571 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 26 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-18 14:56:47,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 344 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-18 14:56:47,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2022-02-18 14:56:47,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 716. [2022-02-18 14:56:47,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 715 states have (on average 2.521678321678322) internal successors, (1803), 715 states have internal predecessors, (1803), 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) [2022-02-18 14:56:47,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 1803 transitions. [2022-02-18 14:56:47,592 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 1803 transitions. Word has length 88 [2022-02-18 14:56:47,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:56:47,594 INFO L470 AbstractCegarLoop]: Abstraction has 716 states and 1803 transitions. [2022-02-18 14:56:47,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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) [2022-02-18 14:56:47,594 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 1803 transitions. [2022-02-18 14:56:47,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-02-18 14:56:47,597 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:56:47,597 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] [2022-02-18 14:56:47,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-18 14:56:47,598 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:56:47,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:56:47,599 INFO L85 PathProgramCache]: Analyzing trace with hash -672454208, now seen corresponding path program 1 times [2022-02-18 14:56:47,599 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:56:47,599 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113685059] [2022-02-18 14:56:47,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:56:47,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:56:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:56:47,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:56:47,703 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:56:47,703 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113685059] [2022-02-18 14:56:47,704 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113685059] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-18 14:56:47,704 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-18 14:56:47,704 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-18 14:56:47,704 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651423377] [2022-02-18 14:56:47,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-18 14:56:47,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-18 14:56:47,704 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:56:47,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-18 14:56:47,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-18 14:56:47,705 INFO L87 Difference]: Start difference. First operand 716 states and 1803 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2022-02-18 14:56:47,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:56:47,749 INFO L93 Difference]: Finished difference Result 843 states and 2119 transitions. [2022-02-18 14:56:47,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-18 14:56:47,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 91 [2022-02-18 14:56:47,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:56:47,753 INFO L225 Difference]: With dead ends: 843 [2022-02-18 14:56:47,753 INFO L226 Difference]: Without dead ends: 795 [2022-02-18 14:56:47,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-18 14:56:47,754 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 26 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-18 14:56:47,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 147 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-18 14:56:47,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2022-02-18 14:56:47,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 795. [2022-02-18 14:56:47,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 794 states have (on average 2.522670025188917) internal successors, (2003), 794 states have internal predecessors, (2003), 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) [2022-02-18 14:56:47,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 2003 transitions. [2022-02-18 14:56:47,768 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 2003 transitions. Word has length 91 [2022-02-18 14:56:47,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:56:47,770 INFO L470 AbstractCegarLoop]: Abstraction has 795 states and 2003 transitions. [2022-02-18 14:56:47,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2022-02-18 14:56:47,770 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 2003 transitions. [2022-02-18 14:56:47,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-02-18 14:56:47,775 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:56:47,775 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] [2022-02-18 14:56:47,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-18 14:56:47,775 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:56:47,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:56:47,776 INFO L85 PathProgramCache]: Analyzing trace with hash 653585244, now seen corresponding path program 1 times [2022-02-18 14:56:47,776 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:56:47,776 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159253161] [2022-02-18 14:56:47,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:56:47,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:56:47,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:56:47,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:56:47,929 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:56:47,929 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159253161] [2022-02-18 14:56:47,929 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159253161] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-18 14:56:47,929 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-18 14:56:47,929 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-18 14:56:47,929 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586576934] [2022-02-18 14:56:47,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-18 14:56:47,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-18 14:56:47,930 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:56:47,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-18 14:56:47,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-02-18 14:56:47,930 INFO L87 Difference]: Start difference. First operand 795 states and 2003 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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) [2022-02-18 14:56:48,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:56:48,048 INFO L93 Difference]: Finished difference Result 1164 states and 2885 transitions. [2022-02-18 14:56:48,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-18 14:56:48,048 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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 [2022-02-18 14:56:48,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:56:48,051 INFO L225 Difference]: With dead ends: 1164 [2022-02-18 14:56:48,051 INFO L226 Difference]: Without dead ends: 801 [2022-02-18 14:56:48,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-02-18 14:56:48,052 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 422 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-18 14:56:48,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [422 Valid, 338 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-18 14:56:48,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2022-02-18 14:56:48,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 796. [2022-02-18 14:56:48,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 795 states have (on average 2.520754716981132) internal successors, (2004), 795 states have internal predecessors, (2004), 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) [2022-02-18 14:56:48,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 2004 transitions. [2022-02-18 14:56:48,070 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 2004 transitions. Word has length 102 [2022-02-18 14:56:48,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:56:48,071 INFO L470 AbstractCegarLoop]: Abstraction has 796 states and 2004 transitions. [2022-02-18 14:56:48,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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) [2022-02-18 14:56:48,071 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 2004 transitions. [2022-02-18 14:56:48,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-02-18 14:56:48,072 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:56:48,072 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, 1, 1, 1] [2022-02-18 14:56:48,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-18 14:56:48,073 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:56:48,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:56:48,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1083191651, now seen corresponding path program 1 times [2022-02-18 14:56:48,073 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:56:48,073 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061130182] [2022-02-18 14:56:48,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:56:48,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:56:48,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:56:48,261 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-18 14:56:48,262 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:56:48,262 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061130182] [2022-02-18 14:56:48,262 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061130182] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:56:48,263 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118077051] [2022-02-18 14:56:48,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:56:48,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:56:48,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:56:48,264 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) [2022-02-18 14:56:48,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-18 14:56:48,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:56:48,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-18 14:56:48,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:56:49,315 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-02-18 14:56:49,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:56:49,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:56:49,491 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-18 14:56:49,492 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 34 [2022-02-18 14:56:50,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:56:50,628 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118077051] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:56:50,628 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:56:50,628 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 23, 17] total 38 [2022-02-18 14:56:50,628 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742030068] [2022-02-18 14:56:50,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:56:50,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-02-18 14:56:50,630 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:56:50,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-02-18 14:56:50,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=361, Invalid=1045, Unknown=0, NotChecked=0, Total=1406 [2022-02-18 14:56:50,631 INFO L87 Difference]: Start difference. First operand 796 states and 2004 transitions. Second operand has 38 states, 38 states have (on average 6.894736842105263) internal successors, (262), 38 states have internal predecessors, (262), 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) [2022-02-18 14:56:51,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:56:51,277 INFO L93 Difference]: Finished difference Result 2869 states and 7591 transitions. [2022-02-18 14:56:51,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-18 14:56:51,278 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 6.894736842105263) internal successors, (262), 38 states have internal predecessors, (262), 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 109 [2022-02-18 14:56:51,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:56:51,285 INFO L225 Difference]: With dead ends: 2869 [2022-02-18 14:56:51,286 INFO L226 Difference]: Without dead ends: 1939 [2022-02-18 14:56:51,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 183 SyntacticMatches, 10 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1203 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=690, Invalid=2502, Unknown=0, NotChecked=0, Total=3192 [2022-02-18 14:56:51,287 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 794 mSDsluCounter, 1627 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 1667 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 154 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-18 14:56:51,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [794 Valid, 1667 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 426 Invalid, 0 Unknown, 154 Unchecked, 0.2s Time] [2022-02-18 14:56:51,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1939 states. [2022-02-18 14:56:51,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1939 to 1346. [2022-02-18 14:56:51,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 1345 states have (on average 2.573977695167286) internal successors, (3462), 1345 states have internal predecessors, (3462), 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) [2022-02-18 14:56:51,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 3462 transitions. [2022-02-18 14:56:51,320 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 3462 transitions. Word has length 109 [2022-02-18 14:56:51,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:56:51,320 INFO L470 AbstractCegarLoop]: Abstraction has 1346 states and 3462 transitions. [2022-02-18 14:56:51,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 6.894736842105263) internal successors, (262), 38 states have internal predecessors, (262), 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) [2022-02-18 14:56:51,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 3462 transitions. [2022-02-18 14:56:51,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-02-18 14:56:51,323 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:56:51,324 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, 1, 1, 1] [2022-02-18 14:56:51,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-18 14:56:51,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:56:51,546 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:56:51,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:56:51,547 INFO L85 PathProgramCache]: Analyzing trace with hash 94566077, now seen corresponding path program 1 times [2022-02-18 14:56:51,547 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:56:51,547 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986626204] [2022-02-18 14:56:51,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:56:51,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:56:51,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:56:51,604 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-18 14:56:51,604 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:56:51,605 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986626204] [2022-02-18 14:56:51,607 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986626204] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-18 14:56:51,607 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-18 14:56:51,608 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-18 14:56:51,608 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254695675] [2022-02-18 14:56:51,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-18 14:56:51,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-18 14:56:51,608 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:56:51,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-18 14:56:51,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-18 14:56:51,609 INFO L87 Difference]: Start difference. First operand 1346 states and 3462 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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) [2022-02-18 14:56:51,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:56:51,625 INFO L93 Difference]: Finished difference Result 1393 states and 3569 transitions. [2022-02-18 14:56:51,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-18 14:56:51,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 109 [2022-02-18 14:56:51,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:56:51,630 INFO L225 Difference]: With dead ends: 1393 [2022-02-18 14:56:51,630 INFO L226 Difference]: Without dead ends: 1393 [2022-02-18 14:56:51,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-18 14:56:51,634 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 13 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-18 14:56:51,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 207 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-18 14:56:51,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2022-02-18 14:56:51,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1334. [2022-02-18 14:56:51,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1334 states, 1333 states have (on average 2.557389347336834) internal successors, (3409), 1333 states have internal predecessors, (3409), 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) [2022-02-18 14:56:51,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 3409 transitions. [2022-02-18 14:56:51,667 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 3409 transitions. Word has length 109 [2022-02-18 14:56:51,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:56:51,667 INFO L470 AbstractCegarLoop]: Abstraction has 1334 states and 3409 transitions. [2022-02-18 14:56:51,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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) [2022-02-18 14:56:51,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 3409 transitions. [2022-02-18 14:56:51,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-02-18 14:56:51,670 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:56:51,670 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:56:51,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-18 14:56:51,675 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:56:51,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:56:51,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1998461693, now seen corresponding path program 2 times [2022-02-18 14:56:51,676 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:56:51,676 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278548858] [2022-02-18 14:56:51,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:56:51,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:56:51,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:56:51,769 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-18 14:56:51,769 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:56:51,769 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278548858] [2022-02-18 14:56:51,769 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278548858] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:56:51,769 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986727161] [2022-02-18 14:56:51,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 14:56:51,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:56:51,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:56:51,771 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) [2022-02-18 14:56:51,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-18 14:56:51,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 14:56:51,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:56:51,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-18 14:56:51,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:56:52,058 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-18 14:56:52,059 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-18 14:56:52,059 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986727161] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-18 14:56:52,059 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-18 14:56:52,059 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2022-02-18 14:56:52,059 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717164683] [2022-02-18 14:56:52,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-18 14:56:52,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-18 14:56:52,060 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:56:52,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-18 14:56:52,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-02-18 14:56:52,061 INFO L87 Difference]: Start difference. First operand 1334 states and 3409 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-02-18 14:56:52,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:56:52,098 INFO L93 Difference]: Finished difference Result 3048 states and 7997 transitions. [2022-02-18 14:56:52,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-18 14:56:52,098 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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 115 [2022-02-18 14:56:52,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:56:52,109 INFO L225 Difference]: With dead ends: 3048 [2022-02-18 14:56:52,110 INFO L226 Difference]: Without dead ends: 2856 [2022-02-18 14:56:52,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-02-18 14:56:52,111 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 128 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-18 14:56:52,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 294 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-18 14:56:52,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2856 states. [2022-02-18 14:56:52,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2856 to 2218. [2022-02-18 14:56:52,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2218 states, 2217 states have (on average 2.6738836265223274) internal successors, (5928), 2217 states have internal predecessors, (5928), 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) [2022-02-18 14:56:52,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2218 states to 2218 states and 5928 transitions. [2022-02-18 14:56:52,164 INFO L78 Accepts]: Start accepts. Automaton has 2218 states and 5928 transitions. Word has length 115 [2022-02-18 14:56:52,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:56:52,164 INFO L470 AbstractCegarLoop]: Abstraction has 2218 states and 5928 transitions. [2022-02-18 14:56:52,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-02-18 14:56:52,164 INFO L276 IsEmpty]: Start isEmpty. Operand 2218 states and 5928 transitions. [2022-02-18 14:56:52,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-02-18 14:56:52,168 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:56:52,169 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 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] [2022-02-18 14:56:52,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-18 14:56:52,383 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,SelfDestructingSolverStorable6 [2022-02-18 14:56:52,384 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:56:52,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:56:52,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1016729003, now seen corresponding path program 3 times [2022-02-18 14:56:52,385 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:56:52,385 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731294811] [2022-02-18 14:56:52,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:56:52,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:56:52,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:56:52,462 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-02-18 14:56:52,462 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:56:52,462 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731294811] [2022-02-18 14:56:52,462 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731294811] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-18 14:56:52,462 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-18 14:56:52,463 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-18 14:56:52,463 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726459846] [2022-02-18 14:56:52,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-18 14:56:52,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-18 14:56:52,463 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:56:52,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-18 14:56:52,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-18 14:56:52,464 INFO L87 Difference]: Start difference. First operand 2218 states and 5928 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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) [2022-02-18 14:56:52,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:56:52,495 INFO L93 Difference]: Finished difference Result 3561 states and 9503 transitions. [2022-02-18 14:56:52,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-18 14:56:52,496 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 126 [2022-02-18 14:56:52,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:56:52,508 INFO L225 Difference]: With dead ends: 3561 [2022-02-18 14:56:52,508 INFO L226 Difference]: Without dead ends: 3561 [2022-02-18 14:56:52,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-18 14:56:52,509 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 62 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-18 14:56:52,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 347 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-18 14:56:52,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3561 states. [2022-02-18 14:56:52,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3561 to 3236. [2022-02-18 14:56:52,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3236 states, 3235 states have (on average 2.6884080370942813) internal successors, (8697), 3235 states have internal predecessors, (8697), 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) [2022-02-18 14:56:52,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3236 states to 3236 states and 8697 transitions. [2022-02-18 14:56:52,566 INFO L78 Accepts]: Start accepts. Automaton has 3236 states and 8697 transitions. Word has length 126 [2022-02-18 14:56:52,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:56:52,567 INFO L470 AbstractCegarLoop]: Abstraction has 3236 states and 8697 transitions. [2022-02-18 14:56:52,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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) [2022-02-18 14:56:52,567 INFO L276 IsEmpty]: Start isEmpty. Operand 3236 states and 8697 transitions. [2022-02-18 14:56:52,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-02-18 14:56:52,573 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:56:52,573 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 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] [2022-02-18 14:56:52,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-18 14:56:52,573 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:56:52,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:56:52,574 INFO L85 PathProgramCache]: Analyzing trace with hash -312311179, now seen corresponding path program 1 times [2022-02-18 14:56:52,574 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:56:52,574 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141420511] [2022-02-18 14:56:52,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:56:52,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:56:52,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:56:52,664 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-18 14:56:52,664 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:56:52,664 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141420511] [2022-02-18 14:56:52,664 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141420511] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:56:52,664 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055929082] [2022-02-18 14:56:52,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:56:52,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:56:52,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:56:52,665 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) [2022-02-18 14:56:52,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-18 14:56:52,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:56:52,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-18 14:56:52,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:56:52,937 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-02-18 14:56:52,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:56:53,292 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-18 14:56:53,292 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055929082] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:56:53,292 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:56:53,293 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 7] total 11 [2022-02-18 14:56:53,293 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060289940] [2022-02-18 14:56:53,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:56:53,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-18 14:56:53,293 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:56:53,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-18 14:56:53,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-02-18 14:56:53,294 INFO L87 Difference]: Start difference. First operand 3236 states and 8697 transitions. Second operand has 11 states, 11 states have (on average 19.181818181818183) internal successors, (211), 11 states have internal predecessors, (211), 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) [2022-02-18 14:56:53,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:56:53,368 INFO L93 Difference]: Finished difference Result 6621 states and 17792 transitions. [2022-02-18 14:56:53,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-18 14:56:53,368 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 19.181818181818183) internal successors, (211), 11 states have internal predecessors, (211), 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 126 [2022-02-18 14:56:53,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:56:53,390 INFO L225 Difference]: With dead ends: 6621 [2022-02-18 14:56:53,390 INFO L226 Difference]: Without dead ends: 6477 [2022-02-18 14:56:53,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-02-18 14:56:53,391 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 377 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-18 14:56:53,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [377 Valid, 440 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-18 14:56:53,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6477 states. [2022-02-18 14:56:53,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6477 to 4096. [2022-02-18 14:56:53,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4096 states, 4095 states have (on average 2.7335775335775336) internal successors, (11194), 4095 states have internal predecessors, (11194), 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) [2022-02-18 14:56:53,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4096 states to 4096 states and 11194 transitions. [2022-02-18 14:56:53,484 INFO L78 Accepts]: Start accepts. Automaton has 4096 states and 11194 transitions. Word has length 126 [2022-02-18 14:56:53,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:56:53,484 INFO L470 AbstractCegarLoop]: Abstraction has 4096 states and 11194 transitions. [2022-02-18 14:56:53,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.181818181818183) internal successors, (211), 11 states have internal predecessors, (211), 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) [2022-02-18 14:56:53,485 INFO L276 IsEmpty]: Start isEmpty. Operand 4096 states and 11194 transitions. [2022-02-18 14:56:53,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-02-18 14:56:53,492 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:56:53,493 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-02-18 14:56:53,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-18 14:56:53,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:56:53,706 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:56:53,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:56:53,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1286212861, now seen corresponding path program 2 times [2022-02-18 14:56:53,706 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:56:53,706 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196705604] [2022-02-18 14:56:53,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:56:53,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:56:53,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:56:53,917 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-18 14:56:53,917 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:56:53,917 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196705604] [2022-02-18 14:56:53,917 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196705604] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:56:53,917 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031748006] [2022-02-18 14:56:53,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 14:56:53,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:56:53,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:56:53,918 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) [2022-02-18 14:56:53,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-18 14:56:53,989 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 14:56:53,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:56:53,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 78 conjunts are in the unsatisfiable core [2022-02-18 14:56:53,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:56:54,032 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-18 14:56:54,459 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-18 14:56:54,459 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-02-18 14:56:54,778 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-02-18 14:56:55,087 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-18 14:56:55,157 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-18 14:56:55,903 INFO L353 Elim1Store]: treesize reduction 93, result has 7.0 percent of original size [2022-02-18 14:56:55,904 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 20 [2022-02-18 14:56:55,939 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:56:55,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:56:59,678 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-18 14:56:59,679 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 184 treesize of output 124 [2022-02-18 14:56:59,709 INFO L353 Elim1Store]: treesize reduction 59, result has 41.0 percent of original size [2022-02-18 14:56:59,709 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 380 treesize of output 370 [2022-02-18 14:56:59,740 INFO L353 Elim1Store]: treesize reduction 59, result has 41.0 percent of original size [2022-02-18 14:56:59,740 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 330 treesize of output 294 [2022-02-18 14:56:59,782 INFO L353 Elim1Store]: treesize reduction 59, result has 41.0 percent of original size [2022-02-18 14:56:59,782 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 254 treesize of output 256 [2022-02-18 14:57:03,356 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-02-18 14:57:03,394 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:57:03,394 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031748006] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:57:03,394 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:57:03,394 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 33, 31] total 65 [2022-02-18 14:57:03,394 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471478737] [2022-02-18 14:57:03,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:57:03,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-02-18 14:57:03,395 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:57:03,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-02-18 14:57:03,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=540, Invalid=3558, Unknown=62, NotChecked=0, Total=4160 [2022-02-18 14:57:03,397 INFO L87 Difference]: Start difference. First operand 4096 states and 11194 transitions. Second operand has 65 states, 65 states have (on average 5.061538461538461) internal successors, (329), 65 states have internal predecessors, (329), 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) [2022-02-18 14:57:06,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:57:06,924 INFO L93 Difference]: Finished difference Result 11061 states and 30061 transitions. [2022-02-18 14:57:06,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-02-18 14:57:06,924 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 5.061538461538461) internal successors, (329), 65 states have internal predecessors, (329), 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 130 [2022-02-18 14:57:06,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:57:06,946 INFO L225 Difference]: With dead ends: 11061 [2022-02-18 14:57:06,946 INFO L226 Difference]: Without dead ends: 9945 [2022-02-18 14:57:06,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 222 SyntacticMatches, 6 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3586 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=2035, Invalid=11709, Unknown=62, NotChecked=0, Total=13806 [2022-02-18 14:57:06,949 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 2445 mSDsluCounter, 4847 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2445 SdHoareTripleChecker+Valid, 4794 SdHoareTripleChecker+Invalid, 2278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1196 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-18 14:57:06,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2445 Valid, 4794 Invalid, 2278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1007 Invalid, 0 Unknown, 1196 Unchecked, 0.5s Time] [2022-02-18 14:57:06,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9945 states. [2022-02-18 14:57:07,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9945 to 4346. [2022-02-18 14:57:07,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4346 states, 4345 states have (on average 2.7196777905638667) internal successors, (11817), 4345 states have internal predecessors, (11817), 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) [2022-02-18 14:57:07,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4346 states to 4346 states and 11817 transitions. [2022-02-18 14:57:07,067 INFO L78 Accepts]: Start accepts. Automaton has 4346 states and 11817 transitions. Word has length 130 [2022-02-18 14:57:07,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:57:07,067 INFO L470 AbstractCegarLoop]: Abstraction has 4346 states and 11817 transitions. [2022-02-18 14:57:07,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 5.061538461538461) internal successors, (329), 65 states have internal predecessors, (329), 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) [2022-02-18 14:57:07,067 INFO L276 IsEmpty]: Start isEmpty. Operand 4346 states and 11817 transitions. [2022-02-18 14:57:07,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-02-18 14:57:07,077 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:57:07,077 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-02-18 14:57:07,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-18 14:57:07,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:57:07,297 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:57:07,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:57:07,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1805394603, now seen corresponding path program 3 times [2022-02-18 14:57:07,298 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:57:07,298 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252115884] [2022-02-18 14:57:07,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:57:07,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:57:07,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:57:08,879 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:57:08,879 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:57:08,879 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252115884] [2022-02-18 14:57:08,879 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252115884] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:57:08,879 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136044263] [2022-02-18 14:57:08,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 14:57:08,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:57:08,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:57:08,880 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) [2022-02-18 14:57:08,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-18 14:57:09,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-18 14:57:09,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:57:09,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 38 conjunts are in the unsatisfiable core [2022-02-18 14:57:09,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:57:09,571 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-02-18 14:57:09,571 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 19 [2022-02-18 14:57:09,610 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-18 14:57:09,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:57:09,934 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-02-18 14:57:09,934 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 77 treesize of output 78 [2022-02-18 14:57:10,468 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-18 14:57:10,468 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136044263] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:57:10,469 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:57:10,469 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 12, 9] total 47 [2022-02-18 14:57:10,469 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201352790] [2022-02-18 14:57:10,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:57:10,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-18 14:57:10,469 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:57:10,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-18 14:57:10,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1973, Unknown=0, NotChecked=0, Total=2162 [2022-02-18 14:57:10,470 INFO L87 Difference]: Start difference. First operand 4346 states and 11817 transitions. Second operand has 47 states, 47 states have (on average 6.9787234042553195) internal successors, (328), 47 states have internal predecessors, (328), 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) [2022-02-18 14:57:16,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:57:16,285 INFO L93 Difference]: Finished difference Result 19064 states and 52827 transitions. [2022-02-18 14:57:16,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-02-18 14:57:16,286 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 6.9787234042553195) internal successors, (328), 47 states have internal predecessors, (328), 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 130 [2022-02-18 14:57:16,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:57:16,328 INFO L225 Difference]: With dead ends: 19064 [2022-02-18 14:57:16,328 INFO L226 Difference]: Without dead ends: 18420 [2022-02-18 14:57:16,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 246 SyntacticMatches, 4 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2597 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1286, Invalid=9220, Unknown=0, NotChecked=0, Total=10506 [2022-02-18 14:57:16,330 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 2999 mSDsluCounter, 4324 mSDsCounter, 0 mSdLazyCounter, 1806 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2999 SdHoareTripleChecker+Valid, 4248 SdHoareTripleChecker+Invalid, 2054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 1806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-18 14:57:16,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2999 Valid, 4248 Invalid, 2054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 1806 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-18 14:57:16,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18420 states. [2022-02-18 14:57:16,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18420 to 6710. [2022-02-18 14:57:16,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6710 states, 6709 states have (on average 2.83797883440155) internal successors, (19040), 6709 states have internal predecessors, (19040), 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) [2022-02-18 14:57:16,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6710 states to 6710 states and 19040 transitions. [2022-02-18 14:57:16,538 INFO L78 Accepts]: Start accepts. Automaton has 6710 states and 19040 transitions. Word has length 130 [2022-02-18 14:57:16,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:57:16,538 INFO L470 AbstractCegarLoop]: Abstraction has 6710 states and 19040 transitions. [2022-02-18 14:57:16,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 6.9787234042553195) internal successors, (328), 47 states have internal predecessors, (328), 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) [2022-02-18 14:57:16,538 INFO L276 IsEmpty]: Start isEmpty. Operand 6710 states and 19040 transitions. [2022-02-18 14:57:16,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-02-18 14:57:16,548 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:57:16,549 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-02-18 14:57:16,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-18 14:57:16,763 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 [2022-02-18 14:57:16,763 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:57:16,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:57:16,764 INFO L85 PathProgramCache]: Analyzing trace with hash -185041979, now seen corresponding path program 4 times [2022-02-18 14:57:16,764 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:57:16,764 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027757578] [2022-02-18 14:57:16,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:57:16,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:57:16,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:57:18,081 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:57:18,081 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:57:18,081 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027757578] [2022-02-18 14:57:18,081 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027757578] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:57:18,081 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408465331] [2022-02-18 14:57:18,081 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 14:57:18,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:57:18,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:57:18,082 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) [2022-02-18 14:57:18,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-18 14:57:18,151 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 14:57:18,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:57:18,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 79 conjunts are in the unsatisfiable core [2022-02-18 14:57:18,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:57:18,176 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-18 14:57:18,226 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-02-18 14:57:18,226 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-02-18 14:57:18,792 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-18 14:57:18,792 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-02-18 14:57:19,195 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-02-18 14:57:19,570 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-18 14:57:19,647 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-18 14:57:20,336 INFO L353 Elim1Store]: treesize reduction 48, result has 5.9 percent of original size [2022-02-18 14:57:20,337 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 19 [2022-02-18 14:57:20,359 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:57:20,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:57:24,305 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-18 14:57:24,306 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 184 treesize of output 124 [2022-02-18 14:57:24,336 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-02-18 14:57:24,337 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 800 treesize of output 752 [2022-02-18 14:57:24,370 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-02-18 14:57:24,371 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 700 treesize of output 676 [2022-02-18 14:57:24,410 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-02-18 14:57:24,411 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 624 treesize of output 524 [2022-02-18 14:57:29,979 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:57:29,979 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408465331] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:57:29,979 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:57:29,979 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33, 32] total 90 [2022-02-18 14:57:29,979 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484780817] [2022-02-18 14:57:29,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:57:29,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-02-18 14:57:29,980 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:57:29,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-02-18 14:57:29,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=808, Invalid=7191, Unknown=11, NotChecked=0, Total=8010 [2022-02-18 14:57:29,982 INFO L87 Difference]: Start difference. First operand 6710 states and 19040 transitions. Second operand has 90 states, 90 states have (on average 3.7888888888888888) internal successors, (341), 90 states have internal predecessors, (341), 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) [2022-02-18 14:57:40,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:57:40,737 INFO L93 Difference]: Finished difference Result 17549 states and 48931 transitions. [2022-02-18 14:57:40,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-02-18 14:57:40,737 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 3.7888888888888888) internal successors, (341), 90 states have internal predecessors, (341), 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 130 [2022-02-18 14:57:40,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:57:40,798 INFO L225 Difference]: With dead ends: 17549 [2022-02-18 14:57:40,798 INFO L226 Difference]: Without dead ends: 16617 [2022-02-18 14:57:40,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 218 SyntacticMatches, 9 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 9078 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=3952, Invalid=25793, Unknown=11, NotChecked=0, Total=29756 [2022-02-18 14:57:40,803 INFO L933 BasicCegarLoop]: 311 mSDtfsCounter, 3940 mSDsluCounter, 12513 mSDsCounter, 0 mSdLazyCounter, 3540 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3940 SdHoareTripleChecker+Valid, 11886 SdHoareTripleChecker+Invalid, 6297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 3540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2592 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-18 14:57:40,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3940 Valid, 11886 Invalid, 6297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 3540 Invalid, 0 Unknown, 2592 Unchecked, 1.7s Time] [2022-02-18 14:57:40,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16617 states. [2022-02-18 14:57:40,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16617 to 8602. [2022-02-18 14:57:40,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8602 states, 8601 states have (on average 2.8280432507847926) internal successors, (24324), 8601 states have internal predecessors, (24324), 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) [2022-02-18 14:57:40,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8602 states to 8602 states and 24324 transitions. [2022-02-18 14:57:40,992 INFO L78 Accepts]: Start accepts. Automaton has 8602 states and 24324 transitions. Word has length 130 [2022-02-18 14:57:40,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:57:40,992 INFO L470 AbstractCegarLoop]: Abstraction has 8602 states and 24324 transitions. [2022-02-18 14:57:40,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 3.7888888888888888) internal successors, (341), 90 states have internal predecessors, (341), 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) [2022-02-18 14:57:40,993 INFO L276 IsEmpty]: Start isEmpty. Operand 8602 states and 24324 transitions. [2022-02-18 14:57:41,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-02-18 14:57:41,005 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:57:41,005 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-02-18 14:57:41,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-18 14:57:41,223 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 [2022-02-18 14:57:41,224 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:57:41,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:57:41,224 INFO L85 PathProgramCache]: Analyzing trace with hash -810578241, now seen corresponding path program 5 times [2022-02-18 14:57:41,224 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:57:41,224 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085820167] [2022-02-18 14:57:41,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:57:41,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:57:41,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:57:41,343 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:57:41,343 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:57:41,343 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085820167] [2022-02-18 14:57:41,343 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085820167] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:57:41,343 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231261887] [2022-02-18 14:57:41,343 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 14:57:41,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:57:41,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:57:41,344 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) [2022-02-18 14:57:41,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-18 14:57:41,425 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-18 14:57:41,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:57:41,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-18 14:57:41,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:57:41,832 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 35 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-02-18 14:57:41,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:57:42,227 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 36 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-02-18 14:57:42,227 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231261887] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:57:42,227 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:57:42,227 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 35 [2022-02-18 14:57:42,227 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714932276] [2022-02-18 14:57:42,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:57:42,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-18 14:57:42,228 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:57:42,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-18 14:57:42,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1047, Unknown=0, NotChecked=0, Total=1190 [2022-02-18 14:57:42,229 INFO L87 Difference]: Start difference. First operand 8602 states and 24324 transitions. Second operand has 35 states, 35 states have (on average 7.514285714285714) internal successors, (263), 35 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) [2022-02-18 14:57:42,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:57:42,942 INFO L93 Difference]: Finished difference Result 7402 states and 20912 transitions. [2022-02-18 14:57:42,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-18 14:57:42,943 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 7.514285714285714) internal successors, (263), 35 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 137 [2022-02-18 14:57:42,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:57:42,956 INFO L225 Difference]: With dead ends: 7402 [2022-02-18 14:57:42,957 INFO L226 Difference]: Without dead ends: 7051 [2022-02-18 14:57:42,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=566, Invalid=2190, Unknown=0, NotChecked=0, Total=2756 [2022-02-18 14:57:42,958 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 981 mSDsluCounter, 2095 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 2151 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-18 14:57:42,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [981 Valid, 2151 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-18 14:57:42,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7051 states. [2022-02-18 14:57:43,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7051 to 7051. [2022-02-18 14:57:43,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7051 states, 7050 states have (on average 2.848368794326241) internal successors, (20081), 7050 states have internal predecessors, (20081), 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) [2022-02-18 14:57:43,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7051 states to 7051 states and 20081 transitions. [2022-02-18 14:57:43,094 INFO L78 Accepts]: Start accepts. Automaton has 7051 states and 20081 transitions. Word has length 137 [2022-02-18 14:57:43,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:57:43,094 INFO L470 AbstractCegarLoop]: Abstraction has 7051 states and 20081 transitions. [2022-02-18 14:57:43,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.514285714285714) internal successors, (263), 35 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) [2022-02-18 14:57:43,094 INFO L276 IsEmpty]: Start isEmpty. Operand 7051 states and 20081 transitions. [2022-02-18 14:57:43,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-02-18 14:57:43,104 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:57:43,104 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2022-02-18 14:57:43,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-18 14:57:43,311 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 [2022-02-18 14:57:43,312 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:57:43,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:57:43,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1142216483, now seen corresponding path program 6 times [2022-02-18 14:57:43,312 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:57:43,312 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344628007] [2022-02-18 14:57:43,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:57:43,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:57:43,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:57:43,459 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 19 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:57:43,459 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:57:43,459 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344628007] [2022-02-18 14:57:43,459 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344628007] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:57:43,459 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761962904] [2022-02-18 14:57:43,459 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 14:57:43,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:57:43,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:57:43,460 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) [2022-02-18 14:57:43,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-18 14:57:43,669 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-18 14:57:43,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:57:43,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 14:57:43,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:57:44,185 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 23 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-18 14:57:44,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:57:44,648 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 21 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-18 14:57:44,648 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761962904] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:57:44,649 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:57:44,649 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 42 [2022-02-18 14:57:44,649 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61490952] [2022-02-18 14:57:44,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:57:44,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-02-18 14:57:44,649 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:57:44,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-02-18 14:57:44,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1525, Unknown=0, NotChecked=0, Total=1722 [2022-02-18 14:57:44,650 INFO L87 Difference]: Start difference. First operand 7051 states and 20081 transitions. Second operand has 42 states, 42 states have (on average 6.904761904761905) internal successors, (290), 42 states have internal predecessors, (290), 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) [2022-02-18 14:57:46,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:57:46,082 INFO L93 Difference]: Finished difference Result 5280 states and 14247 transitions. [2022-02-18 14:57:46,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-18 14:57:46,082 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 6.904761904761905) internal successors, (290), 42 states have internal predecessors, (290), 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 141 [2022-02-18 14:57:46,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:57:46,088 INFO L225 Difference]: With dead ends: 5280 [2022-02-18 14:57:46,088 INFO L226 Difference]: Without dead ends: 4189 [2022-02-18 14:57:46,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1011 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1179, Invalid=4223, Unknown=0, NotChecked=0, Total=5402 [2022-02-18 14:57:46,089 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 1268 mSDsluCounter, 2973 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1268 SdHoareTripleChecker+Valid, 3028 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-18 14:57:46,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1268 Valid, 3028 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-18 14:57:46,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4189 states. [2022-02-18 14:57:46,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4189 to 4184. [2022-02-18 14:57:46,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4184 states, 4183 states have (on average 2.7580683719818313) internal successors, (11537), 4183 states have internal predecessors, (11537), 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) [2022-02-18 14:57:46,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4184 states to 4184 states and 11537 transitions. [2022-02-18 14:57:46,145 INFO L78 Accepts]: Start accepts. Automaton has 4184 states and 11537 transitions. Word has length 141 [2022-02-18 14:57:46,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:57:46,145 INFO L470 AbstractCegarLoop]: Abstraction has 4184 states and 11537 transitions. [2022-02-18 14:57:46,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 6.904761904761905) internal successors, (290), 42 states have internal predecessors, (290), 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) [2022-02-18 14:57:46,145 INFO L276 IsEmpty]: Start isEmpty. Operand 4184 states and 11537 transitions. [2022-02-18 14:57:46,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-02-18 14:57:46,153 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:57:46,153 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-02-18 14:57:46,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-02-18 14:57:46,363 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 [2022-02-18 14:57:46,363 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:57:46,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:57:46,364 INFO L85 PathProgramCache]: Analyzing trace with hash 562740418, now seen corresponding path program 7 times [2022-02-18 14:57:46,364 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:57:46,364 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28642075] [2022-02-18 14:57:46,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:57:46,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:57:46,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:57:47,194 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:57:47,194 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:57:47,194 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28642075] [2022-02-18 14:57:47,194 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28642075] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:57:47,194 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934014715] [2022-02-18 14:57:47,194 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 14:57:47,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:57:47,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:57:47,195 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) [2022-02-18 14:57:47,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-18 14:57:47,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:57:47,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 64 conjunts are in the unsatisfiable core [2022-02-18 14:57:47,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:57:49,106 INFO L353 Elim1Store]: treesize reduction 61, result has 39.0 percent of original size [2022-02-18 14:57:49,106 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 52 [2022-02-18 14:57:49,299 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 9 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:57:49,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:57:49,822 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-02-18 14:57:49,823 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 78 [2022-02-18 14:57:52,642 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:57:52,643 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934014715] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:57:52,643 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:57:52,643 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 26, 25] total 71 [2022-02-18 14:57:52,643 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045329502] [2022-02-18 14:57:52,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:57:52,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-02-18 14:57:52,643 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:57:52,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-02-18 14:57:52,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=653, Invalid=4317, Unknown=0, NotChecked=0, Total=4970 [2022-02-18 14:57:52,644 INFO L87 Difference]: Start difference. First operand 4184 states and 11537 transitions. Second operand has 71 states, 71 states have (on average 5.464788732394366) internal successors, (388), 71 states have internal predecessors, (388), 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) [2022-02-18 14:57:58,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:57:58,782 INFO L93 Difference]: Finished difference Result 11702 states and 31047 transitions. [2022-02-18 14:57:58,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-02-18 14:57:58,783 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 5.464788732394366) internal successors, (388), 71 states have internal predecessors, (388), 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 148 [2022-02-18 14:57:58,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:57:58,823 INFO L225 Difference]: With dead ends: 11702 [2022-02-18 14:57:58,823 INFO L226 Difference]: Without dead ends: 11258 [2022-02-18 14:57:58,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 274 SyntacticMatches, 7 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7887 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=2886, Invalid=21920, Unknown=0, NotChecked=0, Total=24806 [2022-02-18 14:57:58,824 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 3310 mSDsluCounter, 8415 mSDsCounter, 0 mSdLazyCounter, 2288 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3310 SdHoareTripleChecker+Valid, 8269 SdHoareTripleChecker+Invalid, 2781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 2288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 353 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-18 14:57:58,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3310 Valid, 8269 Invalid, 2781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 2288 Invalid, 0 Unknown, 353 Unchecked, 1.1s Time] [2022-02-18 14:57:58,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11258 states. [2022-02-18 14:57:58,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11258 to 6180. [2022-02-18 14:57:58,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6180 states, 6179 states have (on average 2.7504450558342772) internal successors, (16995), 6179 states have internal predecessors, (16995), 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) [2022-02-18 14:57:58,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6180 states to 6180 states and 16995 transitions. [2022-02-18 14:57:58,925 INFO L78 Accepts]: Start accepts. Automaton has 6180 states and 16995 transitions. Word has length 148 [2022-02-18 14:57:58,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:57:58,925 INFO L470 AbstractCegarLoop]: Abstraction has 6180 states and 16995 transitions. [2022-02-18 14:57:58,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 5.464788732394366) internal successors, (388), 71 states have internal predecessors, (388), 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) [2022-02-18 14:57:58,925 INFO L276 IsEmpty]: Start isEmpty. Operand 6180 states and 16995 transitions. [2022-02-18 14:57:58,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-02-18 14:57:58,933 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:57:58,933 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-02-18 14:57:58,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-02-18 14:57:59,139 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 [2022-02-18 14:57:59,139 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:57:59,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:57:59,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1664205362, now seen corresponding path program 8 times [2022-02-18 14:57:59,140 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:57:59,140 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577531369] [2022-02-18 14:57:59,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:57:59,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:57:59,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:58:00,235 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:58:00,236 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:58:00,236 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577531369] [2022-02-18 14:58:00,236 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577531369] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:58:00,236 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845965310] [2022-02-18 14:58:00,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 14:58:00,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:58:00,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:58:00,237 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) [2022-02-18 14:58:00,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-18 14:58:00,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 14:58:00,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:58:00,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 86 conjunts are in the unsatisfiable core [2022-02-18 14:58:00,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:58:00,993 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-02-18 14:58:01,164 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-02-18 14:58:01,416 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-02-18 14:58:01,795 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-18 14:58:01,872 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-18 14:58:02,489 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-02-18 14:58:02,489 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 16 [2022-02-18 14:58:02,528 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:58:02,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:58:06,007 INFO L353 Elim1Store]: treesize reduction 132, result has 22.8 percent of original size [2022-02-18 14:58:06,007 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 281 treesize of output 151 [2022-02-18 14:58:06,052 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-02-18 14:58:06,052 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 808 treesize of output 758 [2022-02-18 14:58:06,089 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-02-18 14:58:06,089 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 706 treesize of output 680 [2022-02-18 14:58:06,129 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-02-18 14:58:06,130 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 628 treesize of output 524 [2022-02-18 14:58:08,513 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:58:08,514 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845965310] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:58:08,514 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:58:08,514 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 35, 33] total 91 [2022-02-18 14:58:08,514 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699623829] [2022-02-18 14:58:08,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:58:08,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-02-18 14:58:08,514 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:58:08,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-02-18 14:58:08,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1069, Invalid=7038, Unknown=83, NotChecked=0, Total=8190 [2022-02-18 14:58:08,516 INFO L87 Difference]: Start difference. First operand 6180 states and 16995 transitions. Second operand has 91 states, 91 states have (on average 4.285714285714286) internal successors, (390), 91 states have internal predecessors, (390), 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) [2022-02-18 14:59:00,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:59:00,979 INFO L93 Difference]: Finished difference Result 45236 states and 123483 transitions. [2022-02-18 14:59:00,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 294 states. [2022-02-18 14:59:00,979 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 4.285714285714286) internal successors, (390), 91 states have internal predecessors, (390), 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 148 [2022-02-18 14:59:00,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:59:01,060 INFO L225 Difference]: With dead ends: 45236 [2022-02-18 14:59:01,060 INFO L226 Difference]: Without dead ends: 33100 [2022-02-18 14:59:01,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 671 GetRequests, 253 SyntacticMatches, 52 SemanticMatches, 366 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57275 ImplicationChecksByTransitivity, 48.3s TimeCoverageRelationStatistics Valid=21047, Invalid=113751, Unknown=258, NotChecked=0, Total=135056 [2022-02-18 14:59:01,066 INFO L933 BasicCegarLoop]: 675 mSDtfsCounter, 5648 mSDsluCounter, 37065 mSDsCounter, 0 mSdLazyCounter, 11982 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5648 SdHoareTripleChecker+Valid, 34206 SdHoareTripleChecker+Invalid, 16317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 11982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3910 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-02-18 14:59:01,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5648 Valid, 34206 Invalid, 16317 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [425 Valid, 11982 Invalid, 0 Unknown, 3910 Unchecked, 5.6s Time] [2022-02-18 14:59:01,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33100 states. [2022-02-18 14:59:01,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33100 to 13747. [2022-02-18 14:59:01,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13747 states, 13746 states have (on average 2.815437218099811) internal successors, (38701), 13746 states have internal predecessors, (38701), 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) [2022-02-18 14:59:01,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13747 states to 13747 states and 38701 transitions. [2022-02-18 14:59:01,476 INFO L78 Accepts]: Start accepts. Automaton has 13747 states and 38701 transitions. Word has length 148 [2022-02-18 14:59:01,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:59:01,477 INFO L470 AbstractCegarLoop]: Abstraction has 13747 states and 38701 transitions. [2022-02-18 14:59:01,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 4.285714285714286) internal successors, (390), 91 states have internal predecessors, (390), 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) [2022-02-18 14:59:01,477 INFO L276 IsEmpty]: Start isEmpty. Operand 13747 states and 38701 transitions. [2022-02-18 14:59:01,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-02-18 14:59:01,493 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:59:01,493 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-02-18 14:59:01,511 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-02-18 14:59:01,707 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 [2022-02-18 14:59:01,707 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:59:01,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:59:01,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1120624095, now seen corresponding path program 9 times [2022-02-18 14:59:01,708 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:59:01,708 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477860622] [2022-02-18 14:59:01,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:59:01,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:59:01,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:59:03,160 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:59:03,161 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:59:03,161 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477860622] [2022-02-18 14:59:03,161 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477860622] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:59:03,161 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423796524] [2022-02-18 14:59:03,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 14:59:03,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:59:03,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:59:03,162 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) [2022-02-18 14:59:03,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-02-18 14:59:03,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-18 14:59:03,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:59:03,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 90 conjunts are in the unsatisfiable core [2022-02-18 14:59:03,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:59:04,287 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-02-18 14:59:04,718 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-18 14:59:04,817 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-18 14:59:06,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-18 14:59:06,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-18 14:59:06,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-18 14:59:06,270 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-18 14:59:06,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-18 14:59:06,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-18 14:59:06,281 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-18 14:59:06,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-18 14:59:06,282 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-18 14:59:06,286 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-18 14:59:06,286 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 64 treesize of output 27 [2022-02-18 14:59:06,350 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 4 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:59:06,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:59:08,861 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-18 14:59:08,862 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 272 treesize of output 176 [2022-02-18 14:59:08,938 INFO L353 Elim1Store]: treesize reduction 140, result has 46.4 percent of original size [2022-02-18 14:59:08,939 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 1106 treesize of output 1070 [2022-02-18 14:59:09,015 INFO L353 Elim1Store]: treesize reduction 140, result has 46.4 percent of original size [2022-02-18 14:59:09,015 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 950 treesize of output 950 [2022-02-18 14:59:09,101 INFO L353 Elim1Store]: treesize reduction 140, result has 46.4 percent of original size [2022-02-18 14:59:09,101 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 830 treesize of output 710 [2022-02-18 14:59:21,365 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:59:21,366 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423796524] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:59:21,366 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:59:21,366 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 38, 35] total 96 [2022-02-18 14:59:21,366 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421200561] [2022-02-18 14:59:21,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:59:21,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-02-18 14:59:21,366 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:59:21,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-02-18 14:59:21,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1695, Invalid=7369, Unknown=56, NotChecked=0, Total=9120 [2022-02-18 14:59:21,368 INFO L87 Difference]: Start difference. First operand 13747 states and 38701 transitions. Second operand has 96 states, 96 states have (on average 4.135416666666667) internal successors, (397), 96 states have internal predecessors, (397), 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) [2022-02-18 14:59:47,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:59:47,998 INFO L93 Difference]: Finished difference Result 47990 states and 130558 transitions. [2022-02-18 14:59:47,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 246 states. [2022-02-18 14:59:47,999 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 4.135416666666667) internal successors, (397), 96 states have internal predecessors, (397), 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 151 [2022-02-18 14:59:47,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:59:48,076 INFO L225 Difference]: With dead ends: 47990 [2022-02-18 14:59:48,077 INFO L226 Difference]: Without dead ends: 36036 [2022-02-18 14:59:48,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 261 SyntacticMatches, 10 SemanticMatches, 324 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44579 ImplicationChecksByTransitivity, 24.8s TimeCoverageRelationStatistics Valid=13500, Invalid=92378, Unknown=72, NotChecked=0, Total=105950 [2022-02-18 14:59:48,083 INFO L933 BasicCegarLoop]: 389 mSDtfsCounter, 7338 mSDsluCounter, 18825 mSDsCounter, 0 mSdLazyCounter, 6329 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7338 SdHoareTripleChecker+Valid, 17129 SdHoareTripleChecker+Invalid, 10555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 6329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3900 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-02-18 14:59:48,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7338 Valid, 17129 Invalid, 10555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 6329 Invalid, 0 Unknown, 3900 Unchecked, 3.9s Time] [2022-02-18 14:59:48,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36036 states. [2022-02-18 14:59:48,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36036 to 20455. [2022-02-18 14:59:48,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20455 states, 20454 states have (on average 2.813435024933998) internal successors, (57546), 20454 states have internal predecessors, (57546), 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) [2022-02-18 14:59:48,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20455 states to 20455 states and 57546 transitions. [2022-02-18 14:59:48,608 INFO L78 Accepts]: Start accepts. Automaton has 20455 states and 57546 transitions. Word has length 151 [2022-02-18 14:59:48,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:59:48,609 INFO L470 AbstractCegarLoop]: Abstraction has 20455 states and 57546 transitions. [2022-02-18 14:59:48,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 4.135416666666667) internal successors, (397), 96 states have internal predecessors, (397), 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) [2022-02-18 14:59:48,609 INFO L276 IsEmpty]: Start isEmpty. Operand 20455 states and 57546 transitions. [2022-02-18 14:59:48,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-02-18 14:59:48,628 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:59:48,628 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-02-18 14:59:48,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-02-18 14:59:48,829 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 [2022-02-18 14:59:48,829 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:59:48,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:59:48,830 INFO L85 PathProgramCache]: Analyzing trace with hash -165506841, now seen corresponding path program 10 times [2022-02-18 14:59:48,830 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:59:48,830 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557428898] [2022-02-18 14:59:48,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:59:48,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:59:48,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:59:50,802 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 7 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:59:50,802 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:59:50,803 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557428898] [2022-02-18 14:59:50,803 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557428898] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:59:50,803 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471007439] [2022-02-18 14:59:50,803 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 14:59:50,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:59:50,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:59:50,804 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) [2022-02-18 14:59:50,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-02-18 14:59:50,883 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 14:59:50,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:59:50,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 72 conjunts are in the unsatisfiable core [2022-02-18 14:59:50,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:59:53,579 INFO L353 Elim1Store]: treesize reduction 241, result has 4.0 percent of original size [2022-02-18 14:59:53,580 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 72 treesize of output 31 [2022-02-18 14:59:53,638 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 5 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:59:53,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:59:54,647 INFO L353 Elim1Store]: treesize reduction 168, result has 33.1 percent of original size [2022-02-18 14:59:54,647 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 108 treesize of output 114 [2022-02-18 14:59:57,496 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:59:57,497 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471007439] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:59:57,497 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:59:57,497 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 29, 28] total 88 [2022-02-18 14:59:57,497 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014717444] [2022-02-18 14:59:57,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:59:57,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2022-02-18 14:59:57,497 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:59:57,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2022-02-18 14:59:57,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=681, Invalid=6975, Unknown=0, NotChecked=0, Total=7656 [2022-02-18 14:59:57,512 INFO L87 Difference]: Start difference. First operand 20455 states and 57546 transitions. Second operand has 88 states, 88 states have (on average 4.590909090909091) internal successors, (404), 88 states have internal predecessors, (404), 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) [2022-02-18 15:00:04,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 15:00:04,695 INFO L93 Difference]: Finished difference Result 32411 states and 89355 transitions. [2022-02-18 15:00:04,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-02-18 15:00:04,695 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 4.590909090909091) internal successors, (404), 88 states have internal predecessors, (404), 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 151 [2022-02-18 15:00:04,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 15:00:04,798 INFO L225 Difference]: With dead ends: 32411 [2022-02-18 15:00:04,798 INFO L226 Difference]: Without dead ends: 31665 [2022-02-18 15:00:04,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 267 SyntacticMatches, 6 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7260 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=2708, Invalid=21162, Unknown=0, NotChecked=0, Total=23870 [2022-02-18 15:00:04,800 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 3752 mSDsluCounter, 10311 mSDsCounter, 0 mSdLazyCounter, 2902 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3752 SdHoareTripleChecker+Valid, 10203 SdHoareTripleChecker+Invalid, 4617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 2902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1586 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-18 15:00:04,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3752 Valid, 10203 Invalid, 4617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 2902 Invalid, 0 Unknown, 1586 Unchecked, 1.5s Time] [2022-02-18 15:00:04,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31665 states. [2022-02-18 15:00:05,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31665 to 23957. [2022-02-18 15:00:05,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23957 states, 23956 states have (on average 2.798463850392386) internal successors, (67040), 23956 states have internal predecessors, (67040), 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) [2022-02-18 15:00:05,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23957 states to 23957 states and 67040 transitions. [2022-02-18 15:00:05,385 INFO L78 Accepts]: Start accepts. Automaton has 23957 states and 67040 transitions. Word has length 151 [2022-02-18 15:00:05,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 15:00:05,386 INFO L470 AbstractCegarLoop]: Abstraction has 23957 states and 67040 transitions. [2022-02-18 15:00:05,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 4.590909090909091) internal successors, (404), 88 states have internal predecessors, (404), 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) [2022-02-18 15:00:05,386 INFO L276 IsEmpty]: Start isEmpty. Operand 23957 states and 67040 transitions. [2022-02-18 15:00:05,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-02-18 15:00:05,411 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 15:00:05,412 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-02-18 15:00:05,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-02-18 15:00:05,612 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 [2022-02-18 15:00:05,612 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 15:00:05,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 15:00:05,613 INFO L85 PathProgramCache]: Analyzing trace with hash 409869845, now seen corresponding path program 11 times [2022-02-18 15:00:05,613 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 15:00:05,613 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875880798] [2022-02-18 15:00:05,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 15:00:05,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 15:00:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:00:06,782 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:00:06,783 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 15:00:06,783 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875880798] [2022-02-18 15:00:06,783 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875880798] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 15:00:06,783 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517173276] [2022-02-18 15:00:06,783 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 15:00:06,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:00:06,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 15:00:06,784 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) [2022-02-18 15:00:06,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-02-18 15:00:06,889 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-18 15:00:06,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 15:00:06,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 44 conjunts are in the unsatisfiable core [2022-02-18 15:00:06,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 15:00:07,662 INFO L353 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2022-02-18 15:00:07,662 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 73 treesize of output 21 [2022-02-18 15:00:07,732 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-18 15:00:07,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 15:00:08,257 INFO L353 Elim1Store]: treesize reduction 140, result has 46.4 percent of original size [2022-02-18 15:00:08,258 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 110 treesize of output 152 [2022-02-18 15:00:08,950 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-18 15:00:08,950 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517173276] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 15:00:08,950 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 15:00:08,950 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 13, 12] total 48 [2022-02-18 15:00:08,950 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605397022] [2022-02-18 15:00:08,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 15:00:08,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-18 15:00:08,951 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 15:00:08,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-18 15:00:08,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=1979, Unknown=0, NotChecked=0, Total=2256 [2022-02-18 15:00:08,952 INFO L87 Difference]: Start difference. First operand 23957 states and 67040 transitions. Second operand has 48 states, 48 states have (on average 7.604166666666667) internal successors, (365), 48 states have internal predecessors, (365), 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) [2022-02-18 15:00:21,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 15:00:21,408 INFO L93 Difference]: Finished difference Result 71374 states and 196768 transitions. [2022-02-18 15:00:21,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2022-02-18 15:00:21,408 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 7.604166666666667) internal successors, (365), 48 states have internal predecessors, (365), 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 151 [2022-02-18 15:00:21,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 15:00:21,534 INFO L225 Difference]: With dead ends: 71374 [2022-02-18 15:00:21,534 INFO L226 Difference]: Without dead ends: 50530 [2022-02-18 15:00:21,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 287 SyntacticMatches, 1 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17511 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=3960, Invalid=42050, Unknown=0, NotChecked=0, Total=46010 [2022-02-18 15:00:21,538 INFO L933 BasicCegarLoop]: 612 mSDtfsCounter, 3159 mSDsluCounter, 11397 mSDsCounter, 0 mSdLazyCounter, 4474 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3159 SdHoareTripleChecker+Valid, 11041 SdHoareTripleChecker+Invalid, 4678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 4474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-02-18 15:00:21,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3159 Valid, 11041 Invalid, 4678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 4474 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-02-18 15:00:21,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50530 states. [2022-02-18 15:00:22,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50530 to 18757. [2022-02-18 15:00:22,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18757 states, 18756 states have (on average 2.779910428662828) internal successors, (52140), 18756 states have internal predecessors, (52140), 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) [2022-02-18 15:00:22,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18757 states to 18757 states and 52140 transitions. [2022-02-18 15:00:22,156 INFO L78 Accepts]: Start accepts. Automaton has 18757 states and 52140 transitions. Word has length 151 [2022-02-18 15:00:22,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 15:00:22,156 INFO L470 AbstractCegarLoop]: Abstraction has 18757 states and 52140 transitions. [2022-02-18 15:00:22,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 7.604166666666667) internal successors, (365), 48 states have internal predecessors, (365), 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) [2022-02-18 15:00:22,156 INFO L276 IsEmpty]: Start isEmpty. Operand 18757 states and 52140 transitions. [2022-02-18 15:00:22,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-02-18 15:00:22,170 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 15:00:22,170 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-02-18 15:00:22,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-02-18 15:00:22,371 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 [2022-02-18 15:00:22,372 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 15:00:22,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 15:00:22,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1571541419, now seen corresponding path program 12 times [2022-02-18 15:00:22,373 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 15:00:22,373 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249361703] [2022-02-18 15:00:22,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 15:00:22,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 15:00:22,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:00:23,767 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 9 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:00:23,767 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 15:00:23,767 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249361703] [2022-02-18 15:00:23,767 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249361703] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 15:00:23,767 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062910964] [2022-02-18 15:00:23,768 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 15:00:23,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:00:23,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 15:00:23,769 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) [2022-02-18 15:00:23,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-02-18 15:00:23,879 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-18 15:00:23,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 15:00:23,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 52 conjunts are in the unsatisfiable core [2022-02-18 15:00:23,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 15:00:24,705 INFO L353 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2022-02-18 15:00:24,706 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 18 [2022-02-18 15:00:24,784 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 60 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-18 15:00:24,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 15:00:25,346 INFO L353 Elim1Store]: treesize reduction 140, result has 46.4 percent of original size [2022-02-18 15:00:25,347 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 110 treesize of output 152 [2022-02-18 15:00:26,008 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-18 15:00:26,008 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062910964] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 15:00:26,008 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 15:00:26,008 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 17, 12] total 54 [2022-02-18 15:00:26,008 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616488158] [2022-02-18 15:00:26,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 15:00:26,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-02-18 15:00:26,009 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 15:00:26,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-02-18 15:00:26,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=2578, Unknown=0, NotChecked=0, Total=2862 [2022-02-18 15:00:26,009 INFO L87 Difference]: Start difference. First operand 18757 states and 52140 transitions. Second operand has 54 states, 54 states have (on average 7.111111111111111) internal successors, (384), 54 states have internal predecessors, (384), 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) [2022-02-18 15:00:32,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 15:00:32,812 INFO L93 Difference]: Finished difference Result 38230 states and 104459 transitions. [2022-02-18 15:00:32,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-02-18 15:00:32,812 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 7.111111111111111) internal successors, (384), 54 states have internal predecessors, (384), 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 151 [2022-02-18 15:00:32,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 15:00:32,882 INFO L225 Difference]: With dead ends: 38230 [2022-02-18 15:00:32,882 INFO L226 Difference]: Without dead ends: 31807 [2022-02-18 15:00:32,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 282 SyntacticMatches, 1 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6807 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=1919, Invalid=19251, Unknown=0, NotChecked=0, Total=21170 [2022-02-18 15:00:32,885 INFO L933 BasicCegarLoop]: 360 mSDtfsCounter, 3497 mSDsluCounter, 9223 mSDsCounter, 0 mSdLazyCounter, 3510 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3497 SdHoareTripleChecker+Valid, 9078 SdHoareTripleChecker+Invalid, 3690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 3510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-02-18 15:00:32,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3497 Valid, 9078 Invalid, 3690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 3510 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-02-18 15:00:32,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31807 states. [2022-02-18 15:00:33,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31807 to 20245. [2022-02-18 15:00:33,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20245 states, 20244 states have (on average 2.7852203121912664) internal successors, (56384), 20244 states have internal predecessors, (56384), 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) [2022-02-18 15:00:33,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20245 states to 20245 states and 56384 transitions. [2022-02-18 15:00:33,308 INFO L78 Accepts]: Start accepts. Automaton has 20245 states and 56384 transitions. Word has length 151 [2022-02-18 15:00:33,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 15:00:33,308 INFO L470 AbstractCegarLoop]: Abstraction has 20245 states and 56384 transitions. [2022-02-18 15:00:33,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 7.111111111111111) internal successors, (384), 54 states have internal predecessors, (384), 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) [2022-02-18 15:00:33,309 INFO L276 IsEmpty]: Start isEmpty. Operand 20245 states and 56384 transitions. [2022-02-18 15:00:33,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-02-18 15:00:33,323 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 15:00:33,323 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-02-18 15:00:33,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-02-18 15:00:33,535 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 [2022-02-18 15:00:33,535 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 15:00:33,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 15:00:33,536 INFO L85 PathProgramCache]: Analyzing trace with hash -233771259, now seen corresponding path program 13 times [2022-02-18 15:00:33,536 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 15:00:33,536 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755825440] [2022-02-18 15:00:33,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 15:00:33,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 15:00:33,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:00:33,766 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-18 15:00:33,766 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 15:00:33,766 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755825440] [2022-02-18 15:00:33,766 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755825440] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 15:00:33,766 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804457586] [2022-02-18 15:00:33,766 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 15:00:33,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:00:33,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 15:00:33,767 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) [2022-02-18 15:00:33,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-02-18 15:00:33,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:00:33,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 73 conjunts are in the unsatisfiable core [2022-02-18 15:00:33,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 15:00:36,156 INFO L353 Elim1Store]: treesize reduction 241, result has 4.0 percent of original size [2022-02-18 15:00:36,156 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 68 treesize of output 27 [2022-02-18 15:00:36,279 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 9 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:00:36,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 15:00:37,182 INFO L353 Elim1Store]: treesize reduction 142, result has 43.4 percent of original size [2022-02-18 15:00:37,182 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 108 treesize of output 140 [2022-02-18 15:00:40,741 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:00:40,741 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804457586] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 15:00:40,741 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 15:00:40,741 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 29, 28] total 59 [2022-02-18 15:00:40,742 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529230913] [2022-02-18 15:00:40,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 15:00:40,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-02-18 15:00:40,742 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 15:00:40,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-02-18 15:00:40,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=430, Invalid=2992, Unknown=0, NotChecked=0, Total=3422 [2022-02-18 15:00:40,743 INFO L87 Difference]: Start difference. First operand 20245 states and 56384 transitions. Second operand has 59 states, 59 states have (on average 6.4576271186440675) internal successors, (381), 59 states have internal predecessors, (381), 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) [2022-02-18 15:00:43,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 15:00:43,501 INFO L93 Difference]: Finished difference Result 25310 states and 69862 transitions. [2022-02-18 15:00:43,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-02-18 15:00:43,502 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 6.4576271186440675) internal successors, (381), 59 states have internal predecessors, (381), 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 151 [2022-02-18 15:00:43,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 15:00:43,557 INFO L225 Difference]: With dead ends: 25310 [2022-02-18 15:00:43,557 INFO L226 Difference]: Without dead ends: 24696 [2022-02-18 15:00:43,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 267 SyntacticMatches, 4 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2660 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1387, Invalid=8713, Unknown=0, NotChecked=0, Total=10100 [2022-02-18 15:00:43,559 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 1837 mSDsluCounter, 5207 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1837 SdHoareTripleChecker+Valid, 5289 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 316 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-18 15:00:43,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1837 Valid, 5289 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1093 Invalid, 0 Unknown, 316 Unchecked, 0.5s Time] [2022-02-18 15:00:43,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24696 states. [2022-02-18 15:00:43,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24696 to 20965. [2022-02-18 15:00:43,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20965 states, 20964 states have (on average 2.781577943140622) internal successors, (58313), 20964 states have internal predecessors, (58313), 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) [2022-02-18 15:00:43,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20965 states to 20965 states and 58313 transitions. [2022-02-18 15:00:43,907 INFO L78 Accepts]: Start accepts. Automaton has 20965 states and 58313 transitions. Word has length 151 [2022-02-18 15:00:43,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 15:00:43,907 INFO L470 AbstractCegarLoop]: Abstraction has 20965 states and 58313 transitions. [2022-02-18 15:00:43,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 6.4576271186440675) internal successors, (381), 59 states have internal predecessors, (381), 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) [2022-02-18 15:00:43,907 INFO L276 IsEmpty]: Start isEmpty. Operand 20965 states and 58313 transitions. [2022-02-18 15:00:43,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-02-18 15:00:43,923 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 15:00:43,923 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-02-18 15:00:43,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-02-18 15:00:44,139 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 [2022-02-18 15:00:44,140 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 15:00:44,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 15:00:44,140 INFO L85 PathProgramCache]: Analyzing trace with hash 532271767, now seen corresponding path program 14 times [2022-02-18 15:00:44,140 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 15:00:44,140 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236477223] [2022-02-18 15:00:44,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 15:00:44,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 15:00:44,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:00:44,324 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-18 15:00:44,324 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 15:00:44,324 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236477223] [2022-02-18 15:00:44,325 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236477223] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 15:00:44,325 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124225601] [2022-02-18 15:00:44,325 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 15:00:44,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:00:44,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 15:00:44,326 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) [2022-02-18 15:00:44,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-02-18 15:00:44,429 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 15:00:44,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 15:00:44,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 95 conjunts are in the unsatisfiable core [2022-02-18 15:00:44,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 15:00:44,994 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-02-18 15:00:45,147 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-02-18 15:00:45,354 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-02-18 15:00:45,669 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-18 15:00:45,738 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-18 15:00:46,633 INFO L353 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2022-02-18 15:00:46,633 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 73 treesize of output 21 [2022-02-18 15:00:46,676 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:00:46,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 15:00:50,781 INFO L353 Elim1Store]: treesize reduction 132, result has 22.8 percent of original size [2022-02-18 15:00:50,781 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 416 treesize of output 202 [2022-02-18 15:00:50,864 INFO L353 Elim1Store]: treesize reduction 154, result has 41.0 percent of original size [2022-02-18 15:00:50,864 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 528 treesize of output 556 [2022-02-18 15:00:50,949 INFO L353 Elim1Store]: treesize reduction 154, result has 41.0 percent of original size [2022-02-18 15:00:50,950 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 450 treesize of output 436 [2022-02-18 15:00:51,027 INFO L353 Elim1Store]: treesize reduction 154, result has 41.0 percent of original size [2022-02-18 15:00:51,027 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 330 treesize of output 376 [2022-02-18 15:01:03,664 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:01:03,665 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124225601] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 15:01:03,665 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 15:01:03,665 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 38, 36] total 76 [2022-02-18 15:01:03,665 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049912609] [2022-02-18 15:01:03,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 15:01:03,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-02-18 15:01:03,665 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 15:01:03,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-02-18 15:01:03,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1038, Invalid=4578, Unknown=84, NotChecked=0, Total=5700 [2022-02-18 15:01:03,667 INFO L87 Difference]: Start difference. First operand 20965 states and 58313 transitions. Second operand has 76 states, 76 states have (on average 5.131578947368421) internal successors, (390), 76 states have internal predecessors, (390), 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) [2022-02-18 15:01:13,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 15:01:13,414 INFO L93 Difference]: Finished difference Result 44135 states and 121614 transitions. [2022-02-18 15:01:13,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-02-18 15:01:13,415 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 5.131578947368421) internal successors, (390), 76 states have internal predecessors, (390), 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 151 [2022-02-18 15:01:13,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 15:01:13,502 INFO L225 Difference]: With dead ends: 44135 [2022-02-18 15:01:13,502 INFO L226 Difference]: Without dead ends: 39110 [2022-02-18 15:01:13,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 237 SyntacticMatches, 7 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12846 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=4133, Invalid=30565, Unknown=84, NotChecked=0, Total=34782 [2022-02-18 15:01:13,506 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 3670 mSDsluCounter, 8563 mSDsCounter, 0 mSdLazyCounter, 2620 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3670 SdHoareTripleChecker+Valid, 8419 SdHoareTripleChecker+Invalid, 5203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 2620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2359 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-18 15:01:13,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3670 Valid, 8419 Invalid, 5203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 2620 Invalid, 0 Unknown, 2359 Unchecked, 1.5s Time] [2022-02-18 15:01:13,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39110 states. [2022-02-18 15:01:13,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39110 to 20665. [2022-02-18 15:01:13,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20665 states, 20664 states have (on average 2.778697251258227) internal successors, (57419), 20664 states have internal predecessors, (57419), 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) [2022-02-18 15:01:13,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20665 states to 20665 states and 57419 transitions. [2022-02-18 15:01:13,984 INFO L78 Accepts]: Start accepts. Automaton has 20665 states and 57419 transitions. Word has length 151 [2022-02-18 15:01:13,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 15:01:13,985 INFO L470 AbstractCegarLoop]: Abstraction has 20665 states and 57419 transitions. [2022-02-18 15:01:13,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 5.131578947368421) internal successors, (390), 76 states have internal predecessors, (390), 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) [2022-02-18 15:01:13,985 INFO L276 IsEmpty]: Start isEmpty. Operand 20665 states and 57419 transitions. [2022-02-18 15:01:13,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-02-18 15:01:13,998 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 15:01:13,999 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-02-18 15:01:14,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-02-18 15:01:14,199 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 [2022-02-18 15:01:14,201 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 15:01:14,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 15:01:14,202 INFO L85 PathProgramCache]: Analyzing trace with hash 42761981, now seen corresponding path program 15 times [2022-02-18 15:01:14,202 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 15:01:14,202 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432292942] [2022-02-18 15:01:14,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 15:01:14,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 15:01:14,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:01:14,374 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-18 15:01:14,374 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 15:01:14,374 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432292942] [2022-02-18 15:01:14,374 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432292942] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 15:01:14,374 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668591433] [2022-02-18 15:01:14,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 15:01:14,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:01:14,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 15:01:14,376 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) [2022-02-18 15:01:14,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-02-18 15:01:14,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-18 15:01:14,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 15:01:14,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 62 conjunts are in the unsatisfiable core [2022-02-18 15:01:14,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 15:01:15,986 INFO L353 Elim1Store]: treesize reduction 162, result has 4.1 percent of original size [2022-02-18 15:01:15,987 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 68 treesize of output 24 [2022-02-18 15:01:16,043 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:01:16,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 15:01:20,028 INFO L353 Elim1Store]: treesize reduction 130, result has 48.2 percent of original size [2022-02-18 15:01:20,028 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 106 treesize of output 152 [2022-02-18 15:01:22,654 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:01:22,655 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668591433] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 15:01:22,655 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 15:01:22,655 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 22, 22] total 45 [2022-02-18 15:01:22,655 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433603563] [2022-02-18 15:01:22,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 15:01:22,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-02-18 15:01:22,655 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 15:01:22,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-02-18 15:01:22,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=319, Invalid=1661, Unknown=0, NotChecked=0, Total=1980 [2022-02-18 15:01:22,656 INFO L87 Difference]: Start difference. First operand 20665 states and 57419 transitions. Second operand has 45 states, 45 states have (on average 8.422222222222222) internal successors, (379), 45 states have internal predecessors, (379), 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) [2022-02-18 15:01:24,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 15:01:24,845 INFO L93 Difference]: Finished difference Result 37129 states and 101905 transitions. [2022-02-18 15:01:24,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-18 15:01:24,845 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 8.422222222222222) internal successors, (379), 45 states have internal predecessors, (379), 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 151 [2022-02-18 15:01:24,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 15:01:24,916 INFO L225 Difference]: With dead ends: 37129 [2022-02-18 15:01:24,917 INFO L226 Difference]: Without dead ends: 35445 [2022-02-18 15:01:24,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 276 SyntacticMatches, 4 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2260 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1074, Invalid=5732, Unknown=0, NotChecked=0, Total=6806 [2022-02-18 15:01:24,918 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 2030 mSDsluCounter, 4291 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2030 SdHoareTripleChecker+Valid, 4322 SdHoareTripleChecker+Invalid, 1831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 741 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-18 15:01:24,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2030 Valid, 4322 Invalid, 1831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1011 Invalid, 0 Unknown, 741 Unchecked, 0.5s Time] [2022-02-18 15:01:24,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35445 states. [2022-02-18 15:01:25,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35445 to 23137. [2022-02-18 15:01:25,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23137 states, 23136 states have (on average 2.77597683264177) internal successors, (64225), 23136 states have internal predecessors, (64225), 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) [2022-02-18 15:01:25,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23137 states to 23137 states and 64225 transitions. [2022-02-18 15:01:25,368 INFO L78 Accepts]: Start accepts. Automaton has 23137 states and 64225 transitions. Word has length 151 [2022-02-18 15:01:25,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 15:01:25,368 INFO L470 AbstractCegarLoop]: Abstraction has 23137 states and 64225 transitions. [2022-02-18 15:01:25,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 8.422222222222222) internal successors, (379), 45 states have internal predecessors, (379), 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) [2022-02-18 15:01:25,369 INFO L276 IsEmpty]: Start isEmpty. Operand 23137 states and 64225 transitions. [2022-02-18 15:01:25,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-02-18 15:01:25,394 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 15:01:25,394 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-02-18 15:01:25,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-02-18 15:01:25,594 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 [2022-02-18 15:01:25,595 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 15:01:25,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 15:01:25,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1976097762, now seen corresponding path program 16 times [2022-02-18 15:01:25,595 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 15:01:25,595 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354037850] [2022-02-18 15:01:25,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 15:01:25,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 15:01:25,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:01:25,664 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 33 proven. 45 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-02-18 15:01:25,665 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 15:01:25,665 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354037850] [2022-02-18 15:01:25,665 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354037850] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 15:01:25,665 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082874247] [2022-02-18 15:01:25,665 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 15:01:25,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:01:25,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 15:01:25,666 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) [2022-02-18 15:01:25,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-02-18 15:01:25,757 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 15:01:25,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 15:01:25,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-18 15:01:25,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 15:01:25,982 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 45 proven. 36 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-02-18 15:01:25,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 15:01:26,479 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 28 proven. 57 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-18 15:01:26,479 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082874247] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 15:01:26,479 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 15:01:26,479 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 11] total 18 [2022-02-18 15:01:26,480 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343040176] [2022-02-18 15:01:26,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 15:01:26,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-18 15:01:26,480 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 15:01:26,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-18 15:01:26,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=185, Unknown=0, NotChecked=0, Total=306 [2022-02-18 15:01:26,481 INFO L87 Difference]: Start difference. First operand 23137 states and 64225 transitions. Second operand has 18 states, 18 states have (on average 14.11111111111111) internal successors, (254), 18 states have internal predecessors, (254), 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) [2022-02-18 15:01:26,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 15:01:26,752 INFO L93 Difference]: Finished difference Result 49564 states and 137681 transitions. [2022-02-18 15:01:26,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-18 15:01:26,753 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 14.11111111111111) internal successors, (254), 18 states have internal predecessors, (254), 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 160 [2022-02-18 15:01:26,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 15:01:26,863 INFO L225 Difference]: With dead ends: 49564 [2022-02-18 15:01:26,864 INFO L226 Difference]: Without dead ends: 49180 [2022-02-18 15:01:26,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=133, Invalid=209, Unknown=0, NotChecked=0, Total=342 [2022-02-18 15:01:26,864 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 817 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-18 15:01:26,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [817 Valid, 606 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-18 15:01:26,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49180 states. [2022-02-18 15:01:27,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49180 to 38375. [2022-02-18 15:01:27,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38375 states, 38374 states have (on average 2.812868087767759) internal successors, (107941), 38374 states have internal predecessors, (107941), 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) [2022-02-18 15:01:27,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38375 states to 38375 states and 107941 transitions. [2022-02-18 15:01:27,747 INFO L78 Accepts]: Start accepts. Automaton has 38375 states and 107941 transitions. Word has length 160 [2022-02-18 15:01:27,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 15:01:27,747 INFO L470 AbstractCegarLoop]: Abstraction has 38375 states and 107941 transitions. [2022-02-18 15:01:27,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 14.11111111111111) internal successors, (254), 18 states have internal predecessors, (254), 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) [2022-02-18 15:01:27,748 INFO L276 IsEmpty]: Start isEmpty. Operand 38375 states and 107941 transitions. [2022-02-18 15:01:27,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-02-18 15:01:27,772 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 15:01:27,772 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-02-18 15:01:27,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-02-18 15:01:27,973 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 [2022-02-18 15:01:27,973 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 15:01:27,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 15:01:27,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1374002067, now seen corresponding path program 17 times [2022-02-18 15:01:27,974 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 15:01:27,974 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763236201] [2022-02-18 15:01:27,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 15:01:27,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 15:01:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:01:28,202 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 43 proven. 56 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-18 15:01:28,202 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 15:01:28,202 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763236201] [2022-02-18 15:01:28,202 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763236201] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 15:01:28,203 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185172751] [2022-02-18 15:01:28,203 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 15:01:28,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:01:28,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 15:01:28,204 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) [2022-02-18 15:01:28,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-02-18 15:01:28,318 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-18 15:01:28,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 15:01:28,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-18 15:01:28,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 15:01:28,992 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 46 proven. 51 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-02-18 15:01:28,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 15:01:29,635 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 43 proven. 54 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-02-18 15:01:29,635 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185172751] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 15:01:29,635 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 15:01:29,635 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 51 [2022-02-18 15:01:29,635 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896295746] [2022-02-18 15:01:29,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 15:01:29,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-02-18 15:01:29,636 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 15:01:29,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-02-18 15:01:29,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=2271, Unknown=0, NotChecked=0, Total=2550 [2022-02-18 15:01:29,636 INFO L87 Difference]: Start difference. First operand 38375 states and 107941 transitions. Second operand has 51 states, 51 states have (on average 6.764705882352941) internal successors, (345), 51 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:01:32,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 15:01:32,537 INFO L93 Difference]: Finished difference Result 16804 states and 46252 transitions. [2022-02-18 15:01:32,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-02-18 15:01:32,537 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 6.764705882352941) internal successors, (345), 51 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2022-02-18 15:01:32,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 15:01:32,561 INFO L225 Difference]: With dead ends: 16804 [2022-02-18 15:01:32,562 INFO L226 Difference]: Without dead ends: 14042 [2022-02-18 15:01:32,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2129 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2234, Invalid=8068, Unknown=0, NotChecked=0, Total=10302 [2022-02-18 15:01:32,563 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 1275 mSDsluCounter, 3874 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1275 SdHoareTripleChecker+Valid, 3962 SdHoareTripleChecker+Invalid, 1100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-18 15:01:32,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1275 Valid, 3962 Invalid, 1100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-18 15:01:32,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14042 states. [2022-02-18 15:01:32,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14042 to 14037. [2022-02-18 15:01:32,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14037 states, 14036 states have (on average 2.80143915645483) internal successors, (39321), 14036 states have internal predecessors, (39321), 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) [2022-02-18 15:01:32,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14037 states to 14037 states and 39321 transitions. [2022-02-18 15:01:32,772 INFO L78 Accepts]: Start accepts. Automaton has 14037 states and 39321 transitions. Word has length 162 [2022-02-18 15:01:32,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 15:01:32,772 INFO L470 AbstractCegarLoop]: Abstraction has 14037 states and 39321 transitions. [2022-02-18 15:01:32,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 6.764705882352941) internal successors, (345), 51 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 15:01:32,772 INFO L276 IsEmpty]: Start isEmpty. Operand 14037 states and 39321 transitions. [2022-02-18 15:01:32,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-02-18 15:01:32,782 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 15:01:32,782 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-02-18 15:01:32,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-02-18 15:01:32,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:01:32,983 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 15:01:32,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 15:01:32,983 INFO L85 PathProgramCache]: Analyzing trace with hash 667790564, now seen corresponding path program 18 times [2022-02-18 15:01:32,983 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 15:01:32,983 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398857302] [2022-02-18 15:01:32,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 15:01:32,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 15:01:33,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:01:33,182 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-02-18 15:01:33,182 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 15:01:33,182 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398857302] [2022-02-18 15:01:33,182 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398857302] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 15:01:33,182 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260746196] [2022-02-18 15:01:33,182 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 15:01:33,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:01:33,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 15:01:33,184 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 15:01:33,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-02-18 15:01:33,475 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-18 15:01:33,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 15:01:33,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 72 conjunts are in the unsatisfiable core [2022-02-18 15:01:33,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 15:01:35,548 INFO L353 Elim1Store]: treesize reduction 100, result has 2.9 percent of original size [2022-02-18 15:01:35,548 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 21 [2022-02-18 15:01:35,606 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:01:35,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 15:01:36,386 INFO L353 Elim1Store]: treesize reduction 135, result has 47.3 percent of original size [2022-02-18 15:01:36,399 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 107 treesize of output 150 [2022-02-18 15:01:39,385 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:01:39,385 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260746196] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 15:01:39,385 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 15:01:39,385 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 31, 31] total 63 [2022-02-18 15:01:39,385 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587067726] [2022-02-18 15:01:39,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 15:01:39,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-02-18 15:01:39,386 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 15:01:39,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-02-18 15:01:39,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=544, Invalid=3362, Unknown=0, NotChecked=0, Total=3906 [2022-02-18 15:01:39,387 INFO L87 Difference]: Start difference. First operand 14037 states and 39321 transitions. Second operand has 63 states, 63 states have (on average 6.682539682539683) internal successors, (421), 63 states have internal predecessors, (421), 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) [2022-02-18 15:01:46,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 15:01:46,069 INFO L93 Difference]: Finished difference Result 78334 states and 218213 transitions. [2022-02-18 15:01:46,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-02-18 15:01:46,070 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 6.682539682539683) internal successors, (421), 63 states have internal predecessors, (421), 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 169 [2022-02-18 15:01:46,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 15:01:46,272 INFO L225 Difference]: With dead ends: 78334 [2022-02-18 15:01:46,272 INFO L226 Difference]: Without dead ends: 75267 [2022-02-18 15:01:46,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 303 SyntacticMatches, 3 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9049 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=3029, Invalid=23053, Unknown=0, NotChecked=0, Total=26082 [2022-02-18 15:01:46,274 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 3251 mSDsluCounter, 11154 mSDsCounter, 0 mSdLazyCounter, 2705 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3251 SdHoareTripleChecker+Valid, 10961 SdHoareTripleChecker+Invalid, 4387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 2705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1470 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-18 15:01:46,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3251 Valid, 10961 Invalid, 4387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 2705 Invalid, 0 Unknown, 1470 Unchecked, 1.4s Time] [2022-02-18 15:01:46,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75267 states. [2022-02-18 15:01:47,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75267 to 34840. [2022-02-18 15:01:47,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34840 states, 34839 states have (on average 2.837796722064353) internal successors, (98866), 34839 states have internal predecessors, (98866), 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) [2022-02-18 15:01:47,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34840 states to 34840 states and 98866 transitions. [2022-02-18 15:01:47,464 INFO L78 Accepts]: Start accepts. Automaton has 34840 states and 98866 transitions. Word has length 169 [2022-02-18 15:01:47,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 15:01:47,465 INFO L470 AbstractCegarLoop]: Abstraction has 34840 states and 98866 transitions. [2022-02-18 15:01:47,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 6.682539682539683) internal successors, (421), 63 states have internal predecessors, (421), 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) [2022-02-18 15:01:47,465 INFO L276 IsEmpty]: Start isEmpty. Operand 34840 states and 98866 transitions. [2022-02-18 15:01:47,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-02-18 15:01:47,494 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 15:01:47,494 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-02-18 15:01:47,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-02-18 15:01:47,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-02-18 15:01:47,695 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 15:01:47,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 15:01:47,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1433833590, now seen corresponding path program 19 times [2022-02-18 15:01:47,695 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 15:01:47,695 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961484931] [2022-02-18 15:01:47,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 15:01:47,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 15:01:47,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:01:48,785 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 5 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:01:48,785 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 15:01:48,785 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961484931] [2022-02-18 15:01:48,785 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961484931] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 15:01:48,785 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321233271] [2022-02-18 15:01:48,785 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 15:01:48,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:01:48,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 15:01:48,787 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 15:01:48,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-02-18 15:01:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:01:48,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 78 conjunts are in the unsatisfiable core [2022-02-18 15:01:48,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 15:01:52,962 INFO L353 Elim1Store]: treesize reduction 241, result has 4.0 percent of original size [2022-02-18 15:01:52,962 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 68 treesize of output 27 [2022-02-18 15:01:53,031 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 43 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:01:53,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 15:01:54,118 INFO L353 Elim1Store]: treesize reduction 130, result has 48.2 percent of original size [2022-02-18 15:01:54,118 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 108 treesize of output 152 [2022-02-18 15:01:57,735 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:01:57,735 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321233271] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 15:01:57,735 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 15:01:57,735 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 31, 30] total 81 [2022-02-18 15:01:57,735 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105779432] [2022-02-18 15:01:57,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 15:01:57,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-02-18 15:01:57,736 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 15:01:57,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-02-18 15:01:57,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=801, Invalid=5679, Unknown=0, NotChecked=0, Total=6480 [2022-02-18 15:01:57,737 INFO L87 Difference]: Start difference. First operand 34840 states and 98866 transitions. Second operand has 81 states, 81 states have (on average 5.395061728395062) internal successors, (437), 81 states have internal predecessors, (437), 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) [2022-02-18 15:02:01,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 15:02:01,755 INFO L93 Difference]: Finished difference Result 44689 states and 125614 transitions. [2022-02-18 15:02:01,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-18 15:02:01,756 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 5.395061728395062) internal successors, (437), 81 states have internal predecessors, (437), 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 169 [2022-02-18 15:02:01,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 15:02:01,862 INFO L225 Difference]: With dead ends: 44689 [2022-02-18 15:02:01,862 INFO L226 Difference]: Without dead ends: 44573 [2022-02-18 15:02:01,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 290 SyntacticMatches, 7 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4995 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=1957, Invalid=14555, Unknown=0, NotChecked=0, Total=16512 [2022-02-18 15:02:01,864 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 1573 mSDsluCounter, 6241 mSDsCounter, 0 mSdLazyCounter, 1644 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1573 SdHoareTripleChecker+Valid, 6286 SdHoareTripleChecker+Invalid, 2055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 307 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-18 15:02:01,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1573 Valid, 6286 Invalid, 2055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1644 Invalid, 0 Unknown, 307 Unchecked, 0.7s Time] [2022-02-18 15:02:01,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44573 states. [2022-02-18 15:02:02,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44573 to 37211. [2022-02-18 15:02:02,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37211 states, 37210 states have (on average 2.835366836871809) internal successors, (105504), 37210 states have internal predecessors, (105504), 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) [2022-02-18 15:02:02,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37211 states to 37211 states and 105504 transitions. [2022-02-18 15:02:02,667 INFO L78 Accepts]: Start accepts. Automaton has 37211 states and 105504 transitions. Word has length 169 [2022-02-18 15:02:02,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 15:02:02,668 INFO L470 AbstractCegarLoop]: Abstraction has 37211 states and 105504 transitions. [2022-02-18 15:02:02,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 5.395061728395062) internal successors, (437), 81 states have internal predecessors, (437), 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) [2022-02-18 15:02:02,668 INFO L276 IsEmpty]: Start isEmpty. Operand 37211 states and 105504 transitions. [2022-02-18 15:02:02,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-02-18 15:02:02,698 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 15:02:02,698 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-02-18 15:02:02,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-02-18 15:02:02,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-02-18 15:02:02,899 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 15:02:02,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 15:02:02,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1355567116, now seen corresponding path program 20 times [2022-02-18 15:02:02,900 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 15:02:02,900 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059135137] [2022-02-18 15:02:02,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 15:02:02,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 15:02:02,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:02:03,929 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 5 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:02:03,929 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 15:02:03,929 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059135137] [2022-02-18 15:02:03,929 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059135137] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 15:02:03,929 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941736969] [2022-02-18 15:02:03,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 15:02:03,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:02:03,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 15:02:03,930 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 15:02:03,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-02-18 15:02:04,032 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 15:02:04,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 15:02:04,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 99 conjunts are in the unsatisfiable core [2022-02-18 15:02:04,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 15:02:04,954 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-02-18 15:02:05,190 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-02-18 15:02:05,484 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-02-18 15:02:05,891 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-18 15:02:05,980 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-18 15:02:07,727 INFO L353 Elim1Store]: treesize reduction 100, result has 2.9 percent of original size [2022-02-18 15:02:07,728 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 73 treesize of output 24 [2022-02-18 15:02:07,781 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 5 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:02:07,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 15:02:16,861 INFO L353 Elim1Store]: treesize reduction 132, result has 22.8 percent of original size [2022-02-18 15:02:16,861 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 413 treesize of output 199 [2022-02-18 15:02:16,947 INFO L353 Elim1Store]: treesize reduction 135, result has 47.3 percent of original size [2022-02-18 15:02:16,947 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 1084 treesize of output 1050 [2022-02-18 15:02:17,028 INFO L353 Elim1Store]: treesize reduction 135, result has 47.3 percent of original size [2022-02-18 15:02:17,029 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 930 treesize of output 932 [2022-02-18 15:02:17,114 INFO L353 Elim1Store]: treesize reduction 135, result has 47.3 percent of original size [2022-02-18 15:02:17,114 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 812 treesize of output 696 [2022-02-18 15:02:34,283 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 14 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:02:34,283 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941736969] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 15:02:34,283 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 15:02:34,284 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 43, 41] total 107 [2022-02-18 15:02:34,284 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22245122] [2022-02-18 15:02:34,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 15:02:34,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2022-02-18 15:02:34,284 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 15:02:34,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2022-02-18 15:02:34,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1190, Invalid=10072, Unknown=80, NotChecked=0, Total=11342 [2022-02-18 15:02:34,285 INFO L87 Difference]: Start difference. First operand 37211 states and 105504 transitions. Second operand has 107 states, 107 states have (on average 4.280373831775701) internal successors, (458), 107 states have internal predecessors, (458), 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) [2022-02-18 15:02:40,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 15:02:40,835 INFO L93 Difference]: Finished difference Result 63897 states and 180104 transitions. [2022-02-18 15:02:40,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-02-18 15:02:40,835 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 4.280373831775701) internal successors, (458), 107 states have internal predecessors, (458), 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 169 [2022-02-18 15:02:40,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 15:02:40,986 INFO L225 Difference]: With dead ends: 63897 [2022-02-18 15:02:40,986 INFO L226 Difference]: Without dead ends: 62897 [2022-02-18 15:02:40,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 266 SyntacticMatches, 7 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8818 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=3067, Invalid=23259, Unknown=80, NotChecked=0, Total=26406 [2022-02-18 15:02:40,989 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 2797 mSDsluCounter, 9852 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2797 SdHoareTripleChecker+Valid, 9641 SdHoareTripleChecker+Invalid, 5671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3152 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-18 15:02:40,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2797 Valid, 9641 Invalid, 5671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 2386 Invalid, 0 Unknown, 3152 Unchecked, 1.0s Time] [2022-02-18 15:02:41,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62897 states. [2022-02-18 15:02:41,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62897 to 37409. [2022-02-18 15:02:41,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37409 states, 37408 states have (on average 2.8338323353293413) internal successors, (106008), 37408 states have internal predecessors, (106008), 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) [2022-02-18 15:02:41,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37409 states to 37409 states and 106008 transitions. [2022-02-18 15:02:41,875 INFO L78 Accepts]: Start accepts. Automaton has 37409 states and 106008 transitions. Word has length 169 [2022-02-18 15:02:41,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 15:02:41,875 INFO L470 AbstractCegarLoop]: Abstraction has 37409 states and 106008 transitions. [2022-02-18 15:02:41,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 4.280373831775701) internal successors, (458), 107 states have internal predecessors, (458), 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) [2022-02-18 15:02:41,876 INFO L276 IsEmpty]: Start isEmpty. Operand 37409 states and 106008 transitions. [2022-02-18 15:02:41,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-02-18 15:02:41,901 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 15:02:41,902 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-02-18 15:02:41,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-02-18 15:02:42,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-02-18 15:02:42,112 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 15:02:42,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 15:02:42,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1740400616, now seen corresponding path program 21 times [2022-02-18 15:02:42,112 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 15:02:42,112 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154834704] [2022-02-18 15:02:42,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 15:02:42,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 15:02:42,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:02:44,032 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 5 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:02:44,032 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 15:02:44,032 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154834704] [2022-02-18 15:02:44,033 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154834704] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 15:02:44,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313324551] [2022-02-18 15:02:44,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 15:02:44,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:02:44,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 15:02:44,034 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 15:02:44,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-02-18 15:02:44,200 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-02-18 15:02:44,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 15:02:44,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 54 conjunts are in the unsatisfiable core [2022-02-18 15:02:44,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 15:02:45,267 INFO L353 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2022-02-18 15:02:45,267 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 25 [2022-02-18 15:02:45,325 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 113 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-02-18 15:02:45,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 15:02:45,921 INFO L353 Elim1Store]: treesize reduction 140, result has 46.4 percent of original size [2022-02-18 15:02:45,921 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 110 treesize of output 152 [2022-02-18 15:02:46,566 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 10 proven. 68 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-02-18 15:02:46,566 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313324551] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 15:02:46,567 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 15:02:46,567 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 17, 12] total 57 [2022-02-18 15:02:46,567 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84678536] [2022-02-18 15:02:46,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 15:02:46,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-02-18 15:02:46,567 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 15:02:46,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-02-18 15:02:46,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=2961, Unknown=0, NotChecked=0, Total=3192 [2022-02-18 15:02:46,568 INFO L87 Difference]: Start difference. First operand 37409 states and 106008 transitions. Second operand has 57 states, 57 states have (on average 7.4035087719298245) internal successors, (422), 57 states have internal predecessors, (422), 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) [2022-02-18 15:03:00,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 15:03:00,179 INFO L93 Difference]: Finished difference Result 84708 states and 239991 transitions. [2022-02-18 15:03:00,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2022-02-18 15:03:00,179 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 7.4035087719298245) internal successors, (422), 57 states have internal predecessors, (422), 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 169 [2022-02-18 15:03:00,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 15:03:00,326 INFO L225 Difference]: With dead ends: 84708 [2022-02-18 15:03:00,327 INFO L226 Difference]: Without dead ends: 69076 [2022-02-18 15:03:00,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 318 SyntacticMatches, 1 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11622 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=3316, Invalid=31094, Unknown=0, NotChecked=0, Total=34410 [2022-02-18 15:03:00,329 INFO L933 BasicCegarLoop]: 452 mSDtfsCounter, 2704 mSDsluCounter, 16570 mSDsCounter, 0 mSdLazyCounter, 6649 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2704 SdHoareTripleChecker+Valid, 15956 SdHoareTripleChecker+Invalid, 6879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 6649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-02-18 15:03:00,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2704 Valid, 15956 Invalid, 6879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 6649 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-02-18 15:03:00,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69076 states. [2022-02-18 15:03:01,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69076 to 35666. [2022-02-18 15:03:01,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35666 states, 35665 states have (on average 2.8460114958642926) internal successors, (101503), 35665 states have internal predecessors, (101503), 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) [2022-02-18 15:03:01,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35666 states to 35666 states and 101503 transitions. [2022-02-18 15:03:01,316 INFO L78 Accepts]: Start accepts. Automaton has 35666 states and 101503 transitions. Word has length 169 [2022-02-18 15:03:01,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 15:03:01,316 INFO L470 AbstractCegarLoop]: Abstraction has 35666 states and 101503 transitions. [2022-02-18 15:03:01,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 7.4035087719298245) internal successors, (422), 57 states have internal predecessors, (422), 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) [2022-02-18 15:03:01,317 INFO L276 IsEmpty]: Start isEmpty. Operand 35666 states and 101503 transitions. [2022-02-18 15:03:01,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-02-18 15:03:01,510 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 15:03:01,511 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-02-18 15:03:01,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-02-18 15:03:01,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:03:01,711 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 15:03:01,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 15:03:01,712 INFO L85 PathProgramCache]: Analyzing trace with hash 82764299, now seen corresponding path program 22 times [2022-02-18 15:03:01,712 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 15:03:01,712 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976300683] [2022-02-18 15:03:01,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 15:03:01,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 15:03:01,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:03:01,960 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-02-18 15:03:01,960 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 15:03:01,960 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976300683] [2022-02-18 15:03:01,960 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976300683] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 15:03:01,961 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857398765] [2022-02-18 15:03:01,961 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 15:03:01,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:03:01,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 15:03:01,962 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 15:03:01,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-02-18 15:03:02,070 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 15:03:02,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 15:03:02,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 106 conjunts are in the unsatisfiable core [2022-02-18 15:03:02,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 15:03:02,785 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-02-18 15:03:02,955 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-02-18 15:03:03,177 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-02-18 15:03:03,491 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-18 15:03:03,561 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-02-18 15:03:05,314 INFO L353 Elim1Store]: treesize reduction 345, result has 2.8 percent of original size [2022-02-18 15:03:05,314 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 95 treesize of output 36 [2022-02-18 15:03:05,343 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 10 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:03:05,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 15:03:23,919 INFO L353 Elim1Store]: treesize reduction 132, result has 22.8 percent of original size [2022-02-18 15:03:23,919 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 550 treesize of output 252 [2022-02-18 15:03:24,044 INFO L353 Elim1Store]: treesize reduction 331, result has 29.6 percent of original size [2022-02-18 15:03:24,045 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 668 treesize of output 704 [2022-02-18 15:03:24,168 INFO L353 Elim1Store]: treesize reduction 331, result has 29.6 percent of original size [2022-02-18 15:03:24,168 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 566 treesize of output 548 [2022-02-18 15:03:24,300 INFO L353 Elim1Store]: treesize reduction 331, result has 29.6 percent of original size [2022-02-18 15:03:24,300 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 410 treesize of output 470 [2022-02-18 15:03:48,823 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:03:48,823 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857398765] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 15:03:48,823 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 15:03:48,824 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 41, 39] total 84 [2022-02-18 15:03:48,824 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792658827] [2022-02-18 15:03:48,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 15:03:48,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-02-18 15:03:48,824 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 15:03:48,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-02-18 15:03:48,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=816, Invalid=6076, Unknown=80, NotChecked=0, Total=6972 [2022-02-18 15:03:48,825 INFO L87 Difference]: Start difference. First operand 35666 states and 101503 transitions. Second operand has 84 states, 84 states have (on average 5.25) internal successors, (441), 84 states have internal predecessors, (441), 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) [2022-02-18 15:04:03,094 WARN L228 SmtUtils]: Spent 7.63s on a formula simplification. DAG size of input: 526 DAG size of output: 519 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-18 15:04:18,418 WARN L228 SmtUtils]: Spent 14.67s on a formula simplification. DAG size of input: 477 DAG size of output: 474 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-18 15:04:37,082 WARN L228 SmtUtils]: Spent 15.87s on a formula simplification. DAG size of input: 535 DAG size of output: 500 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-18 15:05:00,677 WARN L228 SmtUtils]: Spent 22.70s on a formula simplification. DAG size of input: 533 DAG size of output: 526 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-18 15:05:17,222 WARN L228 SmtUtils]: Spent 5.07s on a formula simplification that was a NOOP. DAG size: 417 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-18 15:05:47,297 WARN L228 SmtUtils]: Spent 14.75s on a formula simplification. DAG size of input: 411 DAG size of output: 408 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-18 15:06:15,688 WARN L228 SmtUtils]: Spent 20.51s on a formula simplification. DAG size of input: 439 DAG size of output: 436 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-18 15:06:18,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 15:06:18,793 INFO L93 Difference]: Finished difference Result 127785 states and 353943 transitions. [2022-02-18 15:06:18,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2022-02-18 15:06:18,794 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 5.25) internal successors, (441), 84 states have internal predecessors, (441), 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 172 [2022-02-18 15:06:18,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 15:06:19,109 INFO L225 Difference]: With dead ends: 127785 [2022-02-18 15:06:19,109 INFO L226 Difference]: Without dead ends: 117517 [2022-02-18 15:06:19,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 551 GetRequests, 315 SyntacticMatches, 16 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17233 ImplicationChecksByTransitivity, 154.8s TimeCoverageRelationStatistics Valid=5421, Invalid=43495, Unknown=146, NotChecked=0, Total=49062 [2022-02-18 15:06:19,112 INFO L933 BasicCegarLoop]: 329 mSDtfsCounter, 7080 mSDsluCounter, 16142 mSDsCounter, 0 mSdLazyCounter, 1556 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7080 SdHoareTripleChecker+Valid, 16319 SdHoareTripleChecker+Invalid, 9927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 1556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7983 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-18 15:06:19,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7080 Valid, 16319 Invalid, 9927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 1556 Invalid, 0 Unknown, 7983 Unchecked, 1.0s Time] [2022-02-18 15:06:19,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117517 states. [2022-02-18 15:06:20,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117517 to 52756. [2022-02-18 15:06:20,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52756 states, 52755 states have (on average 2.821324992891669) internal successors, (148839), 52755 states have internal predecessors, (148839), 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) [2022-02-18 15:06:20,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52756 states to 52756 states and 148839 transitions. [2022-02-18 15:06:20,714 INFO L78 Accepts]: Start accepts. Automaton has 52756 states and 148839 transitions. Word has length 172 [2022-02-18 15:06:20,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 15:06:20,714 INFO L470 AbstractCegarLoop]: Abstraction has 52756 states and 148839 transitions. [2022-02-18 15:06:20,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 5.25) internal successors, (441), 84 states have internal predecessors, (441), 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) [2022-02-18 15:06:20,715 INFO L276 IsEmpty]: Start isEmpty. Operand 52756 states and 148839 transitions. [2022-02-18 15:06:21,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-02-18 15:06:21,074 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 15:06:21,074 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-02-18 15:06:21,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-02-18 15:06:21,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:06:21,284 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 15:06:21,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 15:06:21,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1907672283, now seen corresponding path program 23 times [2022-02-18 15:06:21,285 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 15:06:21,285 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300534207] [2022-02-18 15:06:21,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 15:06:21,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 15:06:21,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:06:22,621 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 20 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:06:22,621 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 15:06:22,622 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300534207] [2022-02-18 15:06:22,622 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300534207] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 15:06:22,622 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933645394] [2022-02-18 15:06:22,622 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 15:06:22,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:06:22,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 15:06:22,623 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 15:06:22,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-02-18 15:06:22,814 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-18 15:06:22,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 15:06:22,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 84 conjunts are in the unsatisfiable core [2022-02-18 15:06:22,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 15:06:25,492 INFO L353 Elim1Store]: treesize reduction 471, result has 2.7 percent of original size [2022-02-18 15:06:25,492 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 93 treesize of output 36 [2022-02-18 15:06:25,518 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:06:25,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 15:06:28,835 INFO L353 Elim1Store]: treesize reduction 351, result has 27.5 percent of original size [2022-02-18 15:06:28,835 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 143 treesize of output 172 [2022-02-18 15:06:32,124 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 133 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:06:32,124 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933645394] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 15:06:32,124 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 15:06:32,125 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 28, 28] total 80 [2022-02-18 15:06:32,125 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886883939] [2022-02-18 15:06:32,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 15:06:32,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-02-18 15:06:32,125 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 15:06:32,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-02-18 15:06:32,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=675, Invalid=5643, Unknown=2, NotChecked=0, Total=6320 [2022-02-18 15:06:32,126 INFO L87 Difference]: Start difference. First operand 52756 states and 148839 transitions. Second operand has 80 states, 80 states have (on average 5.725) internal successors, (458), 80 states have internal predecessors, (458), 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) [2022-02-18 15:09:01,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 15:09:01,296 INFO L93 Difference]: Finished difference Result 342644 states and 976601 transitions. [2022-02-18 15:09:01,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 429 states. [2022-02-18 15:09:01,297 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 5.725) internal successors, (458), 80 states have internal predecessors, (458), 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 172 [2022-02-18 15:09:01,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 15:09:02,531 INFO L225 Difference]: With dead ends: 342644 [2022-02-18 15:09:02,531 INFO L226 Difference]: Without dead ends: 318049 [2022-02-18 15:09:02,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 970 GetRequests, 387 SyntacticMatches, 82 SemanticMatches, 501 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122791 ImplicationChecksByTransitivity, 144.6s TimeCoverageRelationStatistics Valid=31425, Invalid=221044, Unknown=37, NotChecked=0, Total=252506 [2022-02-18 15:09:02,629 INFO L933 BasicCegarLoop]: 462 mSDtfsCounter, 7908 mSDsluCounter, 19659 mSDsCounter, 0 mSdLazyCounter, 3682 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7908 SdHoareTripleChecker+Valid, 20000 SdHoareTripleChecker+Invalid, 11985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 3682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7712 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-02-18 15:09:02,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7908 Valid, 20000 Invalid, 11985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 3682 Invalid, 0 Unknown, 7712 Unchecked, 2.2s Time] [2022-02-18 15:09:03,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318049 states. [2022-02-18 15:09:08,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318049 to 155975. [2022-02-18 15:09:08,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155975 states, 155974 states have (on average 2.92146126918589) internal successors, (455672), 155974 states have internal predecessors, (455672), 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) [2022-02-18 15:09:09,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155975 states to 155975 states and 455672 transitions. [2022-02-18 15:09:09,099 INFO L78 Accepts]: Start accepts. Automaton has 155975 states and 455672 transitions. Word has length 172 [2022-02-18 15:09:09,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 15:09:09,099 INFO L470 AbstractCegarLoop]: Abstraction has 155975 states and 455672 transitions. [2022-02-18 15:09:09,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 5.725) internal successors, (458), 80 states have internal predecessors, (458), 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) [2022-02-18 15:09:09,100 INFO L276 IsEmpty]: Start isEmpty. Operand 155975 states and 455672 transitions. [2022-02-18 15:09:09,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-02-18 15:09:09,140 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 15:09:09,140 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-02-18 15:09:09,158 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-02-18 15:09:09,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-02-18 15:09:09,348 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 15:09:09,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 15:09:09,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1919355043, now seen corresponding path program 24 times [2022-02-18 15:09:09,348 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 15:09:09,348 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998823568] [2022-02-18 15:09:09,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 15:09:09,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 15:09:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:09:10,829 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 31 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:09:10,830 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 15:09:10,830 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998823568] [2022-02-18 15:09:10,830 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998823568] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 15:09:10,830 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524516201] [2022-02-18 15:09:10,830 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 15:09:10,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:09:10,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 15:09:10,831 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 15:09:10,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-02-18 15:09:10,986 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-18 15:09:10,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 15:09:10,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 68 conjunts are in the unsatisfiable core [2022-02-18 15:09:10,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 15:09:12,240 INFO L353 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2022-02-18 15:09:12,240 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 97 treesize of output 27 [2022-02-18 15:09:12,263 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-18 15:09:12,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 15:09:13,245 INFO L353 Elim1Store]: treesize reduction 274, result has 44.2 percent of original size [2022-02-18 15:09:13,245 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 145 treesize of output 256 [2022-02-18 15:09:14,236 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 11 proven. 77 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-02-18 15:09:14,236 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524516201] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 15:09:14,236 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 15:09:14,236 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 20, 13] total 57 [2022-02-18 15:09:14,236 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138738181] [2022-02-18 15:09:14,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 15:09:14,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-02-18 15:09:14,239 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 15:09:14,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-02-18 15:09:14,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=2911, Unknown=0, NotChecked=0, Total=3192 [2022-02-18 15:09:14,240 INFO L87 Difference]: Start difference. First operand 155975 states and 455672 transitions. Second operand has 57 states, 57 states have (on average 7.649122807017544) internal successors, (436), 57 states have internal predecessors, (436), 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) [2022-02-18 15:09:22,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 15:09:22,371 INFO L93 Difference]: Finished difference Result 211871 states and 606773 transitions. [2022-02-18 15:09:22,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-02-18 15:09:22,372 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 7.649122807017544) internal successors, (436), 57 states have internal predecessors, (436), 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 172 [2022-02-18 15:09:22,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 15:09:23,126 INFO L225 Difference]: With dead ends: 211871 [2022-02-18 15:09:23,126 INFO L226 Difference]: Without dead ends: 172970 [2022-02-18 15:09:23,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 320 SyntacticMatches, 3 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6960 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1911, Invalid=20439, Unknown=0, NotChecked=0, Total=22350 [2022-02-18 15:09:23,127 INFO L933 BasicCegarLoop]: 583 mSDtfsCounter, 2847 mSDsluCounter, 14746 mSDsCounter, 0 mSdLazyCounter, 4956 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2847 SdHoareTripleChecker+Valid, 14641 SdHoareTripleChecker+Invalid, 5133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 4956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-02-18 15:09:23,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2847 Valid, 14641 Invalid, 5133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 4956 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-02-18 15:09:23,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172970 states. [2022-02-18 15:09:26,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172970 to 144449. [2022-02-18 15:09:26,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144449 states, 144448 states have (on average 2.934883141338059) internal successors, (423938), 144448 states have internal predecessors, (423938), 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) [2022-02-18 15:09:27,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144449 states to 144449 states and 423938 transitions. [2022-02-18 15:09:27,361 INFO L78 Accepts]: Start accepts. Automaton has 144449 states and 423938 transitions. Word has length 172 [2022-02-18 15:09:27,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 15:09:27,361 INFO L470 AbstractCegarLoop]: Abstraction has 144449 states and 423938 transitions. [2022-02-18 15:09:27,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 7.649122807017544) internal successors, (436), 57 states have internal predecessors, (436), 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) [2022-02-18 15:09:27,362 INFO L276 IsEmpty]: Start isEmpty. Operand 144449 states and 423938 transitions. [2022-02-18 15:09:27,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-02-18 15:09:27,390 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 15:09:27,391 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-02-18 15:09:27,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-02-18 15:09:27,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-02-18 15:09:27,592 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 15:09:27,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 15:09:27,592 INFO L85 PathProgramCache]: Analyzing trace with hash 390461643, now seen corresponding path program 25 times [2022-02-18 15:09:27,592 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 15:09:27,592 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173326601] [2022-02-18 15:09:27,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 15:09:27,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 15:09:27,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:09:27,843 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-02-18 15:09:27,843 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 15:09:27,843 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173326601] [2022-02-18 15:09:27,843 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173326601] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 15:09:27,843 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792844882] [2022-02-18 15:09:27,843 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 15:09:27,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:09:27,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 15:09:27,856 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 15:09:27,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-02-18 15:09:27,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 15:09:27,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 87 conjunts are in the unsatisfiable core [2022-02-18 15:09:27,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 15:09:31,651 INFO L353 Elim1Store]: treesize reduction 457, result has 2.8 percent of original size [2022-02-18 15:09:31,651 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 94 treesize of output 39 [2022-02-18 15:09:31,685 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 9 proven. 125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:09:31,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 15:09:33,532 INFO L353 Elim1Store]: treesize reduction 291, result has 38.1 percent of original size [2022-02-18 15:09:33,532 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 142 treesize of output 218 [2022-02-18 15:09:38,633 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 15:09:38,633 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792844882] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 15:09:38,633 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 15:09:38,633 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 32, 31] total 66 [2022-02-18 15:09:38,634 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892546115] [2022-02-18 15:09:38,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 15:09:38,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-02-18 15:09:38,634 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 15:09:38,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-02-18 15:09:38,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=536, Invalid=3754, Unknown=0, NotChecked=0, Total=4290 [2022-02-18 15:09:38,635 INFO L87 Difference]: Start difference. First operand 144449 states and 423938 transitions. Second operand has 66 states, 66 states have (on average 6.545454545454546) internal successors, (432), 66 states have internal predecessors, (432), 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) Received shutdown request... [2022-02-18 15:09:46,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-02-18 15:09:46,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 320 SyntacticMatches, 10 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7307 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=2893, Invalid=19757, Unknown=0, NotChecked=0, Total=22650 [2022-02-18 15:09:46,040 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 3747 mSDsluCounter, 7378 mSDsCounter, 0 mSdLazyCounter, 1325 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3747 SdHoareTripleChecker+Valid, 7523 SdHoareTripleChecker+Invalid, 3499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2057 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-18 15:09:46,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3747 Valid, 7523 Invalid, 3499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1325 Invalid, 0 Unknown, 2057 Unchecked, 0.7s Time] [2022-02-18 15:09:46,040 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-02-18 15:09:46,046 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-18 15:09:46,047 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-18 15:09:46,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-02-18 15:09:46,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 15:09:46,242 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (144449states) and FLOYD_HOARE automaton (currently 102 states, 66 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 151 known predicates. [2022-02-18 15:09:46,243 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-02-18 15:09:46,243 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-02-18 15:09:46,245 INFO L732 BasicCegarLoop]: Path program histogram: [25, 3, 1, 1, 1, 1, 1] [2022-02-18 15:09:46,246 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-18 15:09:46,246 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-18 15:09:46,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.02 03:09:46 BasicIcfg [2022-02-18 15:09:46,247 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-18 15:09:46,248 INFO L158 Benchmark]: Toolchain (without parser) took 780379.81ms. Allocated memory was 208.7MB in the beginning and 5.8GB in the end (delta: 5.6GB). Free memory was 158.4MB in the beginning and 3.8GB in the end (delta: -3.6GB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. [2022-02-18 15:09:46,248 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 208.7MB. Free memory is still 175.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-18 15:09:46,248 INFO L158 Benchmark]: CACSL2BoogieTranslator took 274.33ms. Allocated memory is still 208.7MB. Free memory was 158.0MB in the beginning and 182.8MB in the end (delta: -24.7MB). Peak memory consumption was 12.4MB. Max. memory is 8.0GB. [2022-02-18 15:09:46,248 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.71ms. Allocated memory is still 208.7MB. Free memory was 182.5MB in the beginning and 180.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-18 15:09:46,248 INFO L158 Benchmark]: Boogie Preprocessor took 30.38ms. Allocated memory is still 208.7MB. Free memory was 180.7MB in the beginning and 179.4MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-18 15:09:46,248 INFO L158 Benchmark]: RCFGBuilder took 454.54ms. Allocated memory is still 208.7MB. Free memory was 179.0MB in the beginning and 160.8MB in the end (delta: 18.2MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2022-02-18 15:09:46,248 INFO L158 Benchmark]: TraceAbstraction took 779575.45ms. Allocated memory was 208.7MB in the beginning and 5.8GB in the end (delta: 5.6GB). Free memory was 160.1MB in the beginning and 3.8GB in the end (delta: -3.6GB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. [2022-02-18 15:09:46,248 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 208.7MB. Free memory is still 175.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 274.33ms. Allocated memory is still 208.7MB. Free memory was 158.0MB in the beginning and 182.8MB in the end (delta: -24.7MB). Peak memory consumption was 12.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 39.71ms. Allocated memory is still 208.7MB. Free memory was 182.5MB in the beginning and 180.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.38ms. Allocated memory is still 208.7MB. Free memory was 180.7MB in the beginning and 179.4MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 454.54ms. Allocated memory is still 208.7MB. Free memory was 179.0MB in the beginning and 160.8MB in the end (delta: 18.2MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 779575.45ms. Allocated memory was 208.7MB in the beginning and 5.8GB in the end (delta: 5.6GB). Free memory was 160.1MB in the beginning and 3.8GB in the end (delta: -3.6GB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (144449states) and FLOYD_HOARE automaton (currently 102 states, 66 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 151 known predicates. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (144449states) and FLOYD_HOARE automaton (currently 102 states, 66 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 151 known predicates. - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (144449states) and FLOYD_HOARE automaton (currently 102 states, 66 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 151 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 150 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 779.5s, OverallIterations: 33, TraceHistogramMax: 6, PathProgramHistogramMax: 25, EmptinessCheckTime: 1.0s, AutomataDifference: 502.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 81721 SdHoareTripleChecker+Valid, 36.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 81721 mSDsluCounter, 243850 SdHoareTripleChecker+Invalid, 31.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 39788 IncrementalHoareTripleChecker+Unchecked, 249205 mSDsCounter, 4594 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 70466 IncrementalHoareTripleChecker+Invalid, 114848 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4594 mSolverCounterUnsat, 8308 mSDtfsCounter, 70466 mSolverCounterSat, 0.5s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11621 GetRequests, 7283 SyntacticMatches, 250 SemanticMatches, 4087 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 368045 ImplicationChecksByTransitivity, 501.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=155975occurred in iteration=31, InterpolantAutomatonStates: 2753, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 22.3s AutomataMinimizationTime, 32 MinimizatonAttempts, 527870 StatesRemovedByMinimization, 29 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 2.9s SatisfiabilityAnalysisTime, 242.7s InterpolantComputationTime, 8716 NumberOfCodeBlocks, 8617 NumberOfCodeBlocksAsserted, 105 NumberOfCheckSat, 12572 ConstructedInterpolants, 807 QuantifiedInterpolants, 314186 SizeOfPredicates, 779 NumberOfNonLiveVariables, 8894 ConjunctsInSsa, 1619 ConjunctsInUnsatCore, 86 InterpolantComputations, 7 PerfectInterpolantSequences, 1213/6240 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown