/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf -i ../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-08 17:59:43,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 17:59:43,485 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 17:59:43,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-08 17:59:43,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-08 17:59:43,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-08 17:59:43,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-08 17:59:43,584 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-08 17:59:43,618 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 17:59:43,619 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 17:59:43,619 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 17:59:43,619 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 17:59:43,623 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 17:59:43,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 17:59:43,624 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 17:59:43,624 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 17:59:43,624 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 17:59:43,625 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-08 17:59:43,625 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 17:59:43,625 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 17:59:43,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 17:59:43,626 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-08 17:59:43,626 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-08 17:59:43,627 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-08 17:59:43,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 17:59:43,627 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-08 17:59:43,627 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-08 17:59:43,627 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-08 17:59:43,628 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 17:59:43,628 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 17:59:43,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 17:59:43,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 17:59:43,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 17:59:43,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 17:59:43,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 17:59:43,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 17:59:43,630 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-08 17:59:43,630 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-08 17:59:43,630 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 17:59:43,630 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-08 17:59:43,631 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-08 17:59:44,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 17:59:44,048 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 17:59:44,051 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 17:59:44,054 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 17:59:44,055 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 17:59:44,056 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c [2021-10-08 17:59:44,151 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/22bafb378/a3f4873598fe41c7973a0f620b4abac7/FLAG0148edeef [2021-10-08 17:59:44,759 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 17:59:44,760 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c [2021-10-08 17:59:44,774 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/22bafb378/a3f4873598fe41c7973a0f620b4abac7/FLAG0148edeef [2021-10-08 17:59:45,136 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/22bafb378/a3f4873598fe41c7973a0f620b4abac7 [2021-10-08 17:59:45,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 17:59:45,149 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-08 17:59:45,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 17:59:45,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 17:59:45,156 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 17:59:45,157 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 05:59:45" (1/1) ... [2021-10-08 17:59:45,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3044fd14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:59:45, skipping insertion in model container [2021-10-08 17:59:45,158 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 05:59:45" (1/1) ... [2021-10-08 17:59:45,166 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 17:59:45,184 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 17:59:45,361 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c[2091,2104] [2021-10-08 17:59:45,367 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 17:59:45,383 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 17:59:45,407 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c[2091,2104] [2021-10-08 17:59:45,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 17:59:45,424 INFO L208 MainTranslator]: Completed translation [2021-10-08 17:59:45,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:59:45 WrapperNode [2021-10-08 17:59:45,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 17:59:45,426 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 17:59:45,426 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 17:59:45,426 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 17:59:45,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:59:45" (1/1) ... [2021-10-08 17:59:45,446 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:59:45" (1/1) ... [2021-10-08 17:59:45,469 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 17:59:45,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 17:59:45,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 17:59:45,470 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 17:59:45,479 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:59:45" (1/1) ... [2021-10-08 17:59:45,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:59:45" (1/1) ... [2021-10-08 17:59:45,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:59:45" (1/1) ... [2021-10-08 17:59:45,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:59:45" (1/1) ... [2021-10-08 17:59:45,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:59:45" (1/1) ... [2021-10-08 17:59:45,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:59:45" (1/1) ... [2021-10-08 17:59:45,501 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:59:45" (1/1) ... [2021-10-08 17:59:45,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 17:59:45,506 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 17:59:45,506 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 17:59:45,506 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 17:59:45,507 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:59:45" (1/1) ... [2021-10-08 17:59:45,516 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 17:59:45,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 17:59:45,552 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-08 17:59:45,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-08 17:59:45,620 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 17:59:45,620 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 17:59:45,620 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 17:59:45,620 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 17:59:45,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-08 17:59:45,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 17:59:45,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-08 17:59:45,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-08 17:59:45,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-08 17:59:45,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 17:59:45,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 17:59:45,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 17:59:45,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-08 17:59:45,628 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-08 17:59:46,200 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 17:59:46,200 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-08 17:59:46,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 05:59:46 BoogieIcfgContainer [2021-10-08 17:59:46,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 17:59:46,205 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 17:59:46,206 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 17:59:46,212 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 17:59:46,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 05:59:45" (1/3) ... [2021-10-08 17:59:46,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@454c7db8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 05:59:46, skipping insertion in model container [2021-10-08 17:59:46,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:59:45" (2/3) ... [2021-10-08 17:59:46,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@454c7db8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 05:59:46, skipping insertion in model container [2021-10-08 17:59:46,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 05:59:46" (3/3) ... [2021-10-08 17:59:46,215 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr-alt.wvr.c [2021-10-08 17:59:46,222 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 17:59:46,223 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-08 17:59:46,223 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 17:59:46,256 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,257 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,257 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,257 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,257 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,258 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,258 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,258 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,258 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,259 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,259 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,259 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,259 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,260 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,260 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,260 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,260 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,261 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,261 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,261 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,261 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,262 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,262 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,262 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,263 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,263 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,263 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,263 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,264 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,264 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,264 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,264 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,265 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,265 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,265 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,265 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,265 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,266 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,266 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,266 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,266 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,266 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,267 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,267 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,271 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,271 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,271 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,272 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,272 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,275 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,275 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,275 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,275 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,275 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:59:46,281 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-08 17:59:46,337 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 17:59:46,344 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=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-08 17:59:46,345 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-10-08 17:59:46,362 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 17:59:46,376 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 88 transitions, 192 flow [2021-10-08 17:59:46,380 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 88 transitions, 192 flow [2021-10-08 17:59:46,382 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 89 places, 88 transitions, 192 flow [2021-10-08 17:59:46,455 INFO L129 PetriNetUnfolder]: 6/86 cut-off events. [2021-10-08 17:59:46,455 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-08 17:59:46,459 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 86 events. 6/86 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 71 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2021-10-08 17:59:46,462 INFO L116 LiptonReduction]: Number of co-enabled transitions 540 [2021-10-08 17:59:54,559 INFO L131 LiptonReduction]: Checked pairs total: 707 [2021-10-08 17:59:54,559 INFO L133 LiptonReduction]: Total number of compositions: 90 [2021-10-08 17:59:54,570 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 27 transitions, 70 flow [2021-10-08 17:59:54,585 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 67 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 66 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:54,588 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 66 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:54,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-08 17:59:54,593 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:59:54,594 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-08 17:59:54,594 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:59:54,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:59:54,601 INFO L82 PathProgramCache]: Analyzing trace with hash 363, now seen corresponding path program 1 times [2021-10-08 17:59:54,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:59:54,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1585460925] [2021-10-08 17:59:54,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:59:54,615 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:59:54,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:59:54,624 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:59:54,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-08 17:59:54,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:59:54,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-08 17:59:54,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:59:54,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:59:54,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:59:54,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:59:54,702 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:59:54,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1585460925] [2021-10-08 17:59:54,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1585460925] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:59:54,704 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:59:54,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-08 17:59:54,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481073647] [2021-10-08 17:59:54,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-08 17:59:54,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:59:54,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-08 17:59:54,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-08 17:59:54,728 INFO L87 Difference]: Start difference. First operand has 67 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 66 states have internal predecessors, (154), 0 states have call successors, (0), 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, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:54,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:59:54,742 INFO L93 Difference]: Finished difference Result 64 states and 151 transitions. [2021-10-08 17:59:54,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-08 17:59:54,744 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 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 1 [2021-10-08 17:59:54,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:59:54,753 INFO L225 Difference]: With dead ends: 64 [2021-10-08 17:59:54,754 INFO L226 Difference]: Without dead ends: 64 [2021-10-08 17:59:54,755 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-08 17:59:54,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-08 17:59:54,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-10-08 17:59:54,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 57 states have (on average 2.6491228070175437) internal successors, (151), 63 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:54,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 151 transitions. [2021-10-08 17:59:54,799 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 151 transitions. Word has length 1 [2021-10-08 17:59:54,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:59:54,799 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 151 transitions. [2021-10-08 17:59:54,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:54,800 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 151 transitions. [2021-10-08 17:59:54,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 17:59:54,800 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:59:54,800 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 17:59:54,817 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-08 17:59:55,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:59:55,013 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:59:55,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:59:55,014 INFO L82 PathProgramCache]: Analyzing trace with hash 357559, now seen corresponding path program 1 times [2021-10-08 17:59:55,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:59:55,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [379673096] [2021-10-08 17:59:55,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:59:55,016 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:59:55,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:59:55,017 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:59:55,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-08 17:59:55,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:59:55,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 17:59:55,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:59:55,304 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-08 17:59:55,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 38 [2021-10-08 17:59:55,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:59:55,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:59:55,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:59:55,456 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:59:55,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [379673096] [2021-10-08 17:59:55,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [379673096] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:59:55,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:59:55,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:59:55,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756187348] [2021-10-08 17:59:55,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:59:55,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:59:55,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:59:55,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:59:55,460 INFO L87 Difference]: Start difference. First operand 64 states and 151 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:55,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:59:55,507 INFO L93 Difference]: Finished difference Result 58 states and 139 transitions. [2021-10-08 17:59:55,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:59:55,508 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 3 [2021-10-08 17:59:55,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:59:55,510 INFO L225 Difference]: With dead ends: 58 [2021-10-08 17:59:55,510 INFO L226 Difference]: Without dead ends: 58 [2021-10-08 17:59:55,511 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:59:55,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-08 17:59:55,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-10-08 17:59:55,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 2.6226415094339623) internal successors, (139), 57 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:55,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 139 transitions. [2021-10-08 17:59:55,522 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 139 transitions. Word has length 3 [2021-10-08 17:59:55,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:59:55,522 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 139 transitions. [2021-10-08 17:59:55,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:55,523 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 139 transitions. [2021-10-08 17:59:55,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 17:59:55,523 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:59:55,524 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 17:59:55,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-08 17:59:55,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:59:55,739 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:59:55,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:59:55,740 INFO L82 PathProgramCache]: Analyzing trace with hash 357560, now seen corresponding path program 1 times [2021-10-08 17:59:55,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:59:55,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1963635094] [2021-10-08 17:59:55,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:59:55,742 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:59:55,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:59:55,743 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:59:55,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-08 17:59:55,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:59:55,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 17:59:55,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:59:55,887 INFO L354 Elim1Store]: treesize reduction 142, result has 23.2 percent of original size [2021-10-08 17:59:55,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 18 treesize of output 48 [2021-10-08 17:59:56,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:59:56,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:59:56,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:59:56,294 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:59:56,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1963635094] [2021-10-08 17:59:56,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1963635094] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:59:56,299 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:59:56,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 17:59:56,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781376350] [2021-10-08 17:59:56,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 17:59:56,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:59:56,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 17:59:56,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:59:56,306 INFO L87 Difference]: Start difference. First operand 58 states and 139 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:56,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:59:56,337 INFO L93 Difference]: Finished difference Result 52 states and 127 transitions. [2021-10-08 17:59:56,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:59:56,339 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2021-10-08 17:59:56,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:59:56,342 INFO L225 Difference]: With dead ends: 52 [2021-10-08 17:59:56,342 INFO L226 Difference]: Without dead ends: 52 [2021-10-08 17:59:56,343 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:59:56,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-08 17:59:56,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-08 17:59:56,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 49 states have (on average 2.5918367346938775) internal successors, (127), 51 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:56,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 127 transitions. [2021-10-08 17:59:56,358 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 127 transitions. Word has length 3 [2021-10-08 17:59:56,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:59:56,361 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 127 transitions. [2021-10-08 17:59:56,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:56,361 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 127 transitions. [2021-10-08 17:59:56,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 17:59:56,362 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:59:56,362 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 17:59:56,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-08 17:59:56,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:59:56,578 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:59:56,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:59:56,580 INFO L82 PathProgramCache]: Analyzing trace with hash 343621038, now seen corresponding path program 1 times [2021-10-08 17:59:56,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:59:56,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1156084554] [2021-10-08 17:59:56,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:59:56,582 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:59:56,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:59:56,586 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:59:56,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-08 17:59:56,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:59:56,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 17:59:56,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:59:56,755 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-08 17:59:56,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 38 [2021-10-08 17:59:56,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:59:56,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:59:56,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:59:56,943 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:59:56,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1156084554] [2021-10-08 17:59:56,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1156084554] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:59:56,944 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:59:56,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:59:56,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247737136] [2021-10-08 17:59:56,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:59:56,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:59:56,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:59:56,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:59:56,947 INFO L87 Difference]: Start difference. First operand 52 states and 127 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:56,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:59:56,967 INFO L93 Difference]: Finished difference Result 43 states and 100 transitions. [2021-10-08 17:59:56,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:59:56,969 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 5 [2021-10-08 17:59:56,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:59:56,970 INFO L225 Difference]: With dead ends: 43 [2021-10-08 17:59:56,970 INFO L226 Difference]: Without dead ends: 43 [2021-10-08 17:59:56,971 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:59:56,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-08 17:59:56,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-10-08 17:59:56,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 2.4390243902439024) internal successors, (100), 42 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:56,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 100 transitions. [2021-10-08 17:59:56,981 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 100 transitions. Word has length 5 [2021-10-08 17:59:56,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:59:56,983 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 100 transitions. [2021-10-08 17:59:56,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:56,984 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 100 transitions. [2021-10-08 17:59:56,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 17:59:56,984 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:59:56,984 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 17:59:57,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-08 17:59:57,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:59:57,197 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:59:57,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:59:57,198 INFO L82 PathProgramCache]: Analyzing trace with hash 343621039, now seen corresponding path program 1 times [2021-10-08 17:59:57,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:59:57,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1025692202] [2021-10-08 17:59:57,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:59:57,200 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:59:57,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:59:57,201 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:59:57,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-08 17:59:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:59:57,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 17:59:57,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:59:57,348 INFO L354 Elim1Store]: treesize reduction 142, result has 23.2 percent of original size [2021-10-08 17:59:57,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 18 treesize of output 48 [2021-10-08 17:59:57,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:59:57,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:59:57,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:59:57,631 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:59:57,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1025692202] [2021-10-08 17:59:57,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1025692202] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:59:57,632 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:59:57,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 17:59:57,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166328344] [2021-10-08 17:59:57,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 17:59:57,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:59:57,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 17:59:57,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:59:57,634 INFO L87 Difference]: Start difference. First operand 43 states and 100 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:57,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:59:57,646 INFO L93 Difference]: Finished difference Result 34 states and 73 transitions. [2021-10-08 17:59:57,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:59:57,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2021-10-08 17:59:57,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:59:57,647 INFO L225 Difference]: With dead ends: 34 [2021-10-08 17:59:57,648 INFO L226 Difference]: Without dead ends: 34 [2021-10-08 17:59:57,648 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:59:57,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-08 17:59:57,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-08 17:59:57,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 2.212121212121212) internal successors, (73), 33 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:57,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 73 transitions. [2021-10-08 17:59:57,652 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 73 transitions. Word has length 5 [2021-10-08 17:59:57,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:59:57,652 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 73 transitions. [2021-10-08 17:59:57,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:57,653 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 73 transitions. [2021-10-08 17:59:57,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-08 17:59:57,654 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:59:57,654 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:59:57,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-08 17:59:57,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:59:57,868 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:59:57,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:59:57,869 INFO L82 PathProgramCache]: Analyzing trace with hash -242292016, now seen corresponding path program 1 times [2021-10-08 17:59:57,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:59:57,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1795041807] [2021-10-08 17:59:57,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:59:57,871 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:59:57,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:59:57,872 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:59:57,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-08 17:59:57,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:59:57,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 17:59:57,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:59:57,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:59:57,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:59:58,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:59:58,038 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:59:58,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1795041807] [2021-10-08 17:59:58,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1795041807] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:59:58,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:59:58,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-08 17:59:58,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285528625] [2021-10-08 17:59:58,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 17:59:58,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:59:58,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 17:59:58,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 17:59:58,043 INFO L87 Difference]: Start difference. First operand 34 states and 73 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:58,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:59:58,101 INFO L93 Difference]: Finished difference Result 42 states and 92 transitions. [2021-10-08 17:59:58,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 17:59:58,102 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 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 13 [2021-10-08 17:59:58,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:59:58,103 INFO L225 Difference]: With dead ends: 42 [2021-10-08 17:59:58,103 INFO L226 Difference]: Without dead ends: 42 [2021-10-08 17:59:58,103 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 15.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 17:59:58,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-08 17:59:58,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-10-08 17:59:58,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 2.2439024390243905) internal successors, (92), 41 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:58,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 92 transitions. [2021-10-08 17:59:58,113 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 92 transitions. Word has length 13 [2021-10-08 17:59:58,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:59:58,114 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 92 transitions. [2021-10-08 17:59:58,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:58,114 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 92 transitions. [2021-10-08 17:59:58,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 17:59:58,116 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:59:58,116 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:59:58,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-08 17:59:58,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:59:58,318 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:59:58,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:59:58,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1273089140, now seen corresponding path program 1 times [2021-10-08 17:59:58,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:59:58,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [323277430] [2021-10-08 17:59:58,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:59:58,321 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:59:58,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:59:58,322 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:59:58,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-08 17:59:58,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:59:58,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 17:59:58,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:59:58,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:59:58,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:59:58,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:59:58,548 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:59:58,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [323277430] [2021-10-08 17:59:58,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [323277430] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:59:58,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:59:58,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-08 17:59:58,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784699360] [2021-10-08 17:59:58,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 17:59:58,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:59:58,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 17:59:58,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 17:59:58,551 INFO L87 Difference]: Start difference. First operand 42 states and 92 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:58,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:59:58,584 INFO L93 Difference]: Finished difference Result 52 states and 116 transitions. [2021-10-08 17:59:58,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 17:59:58,585 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 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 14 [2021-10-08 17:59:58,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:59:58,586 INFO L225 Difference]: With dead ends: 52 [2021-10-08 17:59:58,586 INFO L226 Difference]: Without dead ends: 52 [2021-10-08 17:59:58,587 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 15.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 17:59:58,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-08 17:59:58,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-08 17:59:58,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 2.2745098039215685) internal successors, (116), 51 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:58,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 116 transitions. [2021-10-08 17:59:58,592 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 116 transitions. Word has length 14 [2021-10-08 17:59:58,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:59:58,592 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 116 transitions. [2021-10-08 17:59:58,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:58,593 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 116 transitions. [2021-10-08 17:59:58,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 17:59:58,594 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:59:58,594 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:59:58,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-08 17:59:58,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:59:58,805 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:59:58,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:59:58,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1472117858, now seen corresponding path program 1 times [2021-10-08 17:59:58,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:59:58,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2139440770] [2021-10-08 17:59:58,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:59:58,808 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:59:58,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:59:58,809 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:59:58,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-08 17:59:58,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:59:58,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 17:59:58,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:59:59,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:59:59,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:59:59,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:59:59,264 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:59:59,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2139440770] [2021-10-08 17:59:59,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2139440770] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:59:59,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:59:59,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-08 17:59:59,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057164879] [2021-10-08 17:59:59,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 17:59:59,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:59:59,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 17:59:59,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-08 17:59:59,267 INFO L87 Difference]: Start difference. First operand 52 states and 116 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:59,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:59:59,364 INFO L93 Difference]: Finished difference Result 60 states and 134 transitions. [2021-10-08 17:59:59,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 17:59:59,365 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 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 15 [2021-10-08 17:59:59,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:59:59,366 INFO L225 Difference]: With dead ends: 60 [2021-10-08 17:59:59,366 INFO L226 Difference]: Without dead ends: 60 [2021-10-08 17:59:59,366 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 94.7ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-08 17:59:59,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-08 17:59:59,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 44. [2021-10-08 17:59:59,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 2.2325581395348837) internal successors, (96), 43 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:59,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 96 transitions. [2021-10-08 17:59:59,371 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 96 transitions. Word has length 15 [2021-10-08 17:59:59,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:59:59,371 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 96 transitions. [2021-10-08 17:59:59,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:59,372 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 96 transitions. [2021-10-08 17:59:59,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 17:59:59,372 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:59:59,373 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:59:59,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-08 17:59:59,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:59:59,574 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:59:59,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:59:59,575 INFO L82 PathProgramCache]: Analyzing trace with hash -293572706, now seen corresponding path program 2 times [2021-10-08 17:59:59,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:59:59,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [150337087] [2021-10-08 17:59:59,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:59:59,576 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:59:59,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:59:59,578 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:59:59,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-08 17:59:59,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:59:59,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:59:59,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 17:59:59,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:00:00,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:00,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:00:01,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:01,250 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:00:01,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [150337087] [2021-10-08 18:00:01,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [150337087] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:00:01,251 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:00:01,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 18:00:01,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367613025] [2021-10-08 18:00:01,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 18:00:01,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:00:01,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 18:00:01,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2021-10-08 18:00:01,254 INFO L87 Difference]: Start difference. First operand 44 states and 96 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:03,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:00:03,189 INFO L93 Difference]: Finished difference Result 164 states and 334 transitions. [2021-10-08 18:00:03,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 18:00:03,191 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 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 15 [2021-10-08 18:00:03,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:00:03,193 INFO L225 Difference]: With dead ends: 164 [2021-10-08 18:00:03,193 INFO L226 Difference]: Without dead ends: 134 [2021-10-08 18:00:03,194 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1996.4ms TimeCoverageRelationStatistics Valid=202, Invalid=500, Unknown=0, NotChecked=0, Total=702 [2021-10-08 18:00:03,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-08 18:00:03,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 68. [2021-10-08 18:00:03,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 2.417910447761194) internal successors, (162), 67 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:03,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 162 transitions. [2021-10-08 18:00:03,213 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 162 transitions. Word has length 15 [2021-10-08 18:00:03,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:00:03,213 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 162 transitions. [2021-10-08 18:00:03,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:03,216 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 162 transitions. [2021-10-08 18:00:03,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 18:00:03,217 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:00:03,217 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:00:03,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-08 18:00:03,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:00:03,431 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:00:03,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:00:03,433 INFO L82 PathProgramCache]: Analyzing trace with hash -211464866, now seen corresponding path program 3 times [2021-10-08 18:00:03,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:00:03,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [18202954] [2021-10-08 18:00:03,433 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:00:03,434 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:00:03,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:00:03,435 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:00:03,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-08 18:00:03,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 18:00:03,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:00:03,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 18:00:03,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:00:03,880 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:03,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:00:04,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:04,984 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:00:04,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [18202954] [2021-10-08 18:00:04,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [18202954] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:00:04,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:00:04,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 18:00:04,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833923461] [2021-10-08 18:00:04,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 18:00:04,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:00:04,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 18:00:04,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-10-08 18:00:04,987 INFO L87 Difference]: Start difference. First operand 68 states and 162 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:06,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:00:06,442 INFO L93 Difference]: Finished difference Result 123 states and 256 transitions. [2021-10-08 18:00:06,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 18:00:06,443 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 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 15 [2021-10-08 18:00:06,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:00:06,444 INFO L225 Difference]: With dead ends: 123 [2021-10-08 18:00:06,444 INFO L226 Difference]: Without dead ends: 108 [2021-10-08 18:00:06,445 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1610.2ms TimeCoverageRelationStatistics Valid=175, Invalid=425, Unknown=0, NotChecked=0, Total=600 [2021-10-08 18:00:06,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-10-08 18:00:06,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 72. [2021-10-08 18:00:06,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 2.4507042253521125) internal successors, (174), 71 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:06,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 174 transitions. [2021-10-08 18:00:06,452 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 174 transitions. Word has length 15 [2021-10-08 18:00:06,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:00:06,452 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 174 transitions. [2021-10-08 18:00:06,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:06,453 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 174 transitions. [2021-10-08 18:00:06,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 18:00:06,454 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:00:06,454 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:00:06,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-08 18:00:06,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:00:06,667 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:00:06,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:00:06,668 INFO L82 PathProgramCache]: Analyzing trace with hash -812224624, now seen corresponding path program 4 times [2021-10-08 18:00:06,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:00:06,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1976510743] [2021-10-08 18:00:06,669 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:00:06,670 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:00:06,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:00:06,671 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:00:06,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-08 18:00:06,799 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:00:06,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:00:06,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 18:00:06,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:00:07,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:07,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:00:08,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:08,313 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:00:08,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1976510743] [2021-10-08 18:00:08,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1976510743] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:00:08,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:00:08,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 18:00:08,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412820492] [2021-10-08 18:00:08,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 18:00:08,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:00:08,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 18:00:08,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-10-08 18:00:08,316 INFO L87 Difference]: Start difference. First operand 72 states and 174 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:09,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:00:09,429 INFO L93 Difference]: Finished difference Result 98 states and 219 transitions. [2021-10-08 18:00:09,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 18:00:09,432 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 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 15 [2021-10-08 18:00:09,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:00:09,435 INFO L225 Difference]: With dead ends: 98 [2021-10-08 18:00:09,435 INFO L226 Difference]: Without dead ends: 80 [2021-10-08 18:00:09,436 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1301.9ms TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2021-10-08 18:00:09,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-08 18:00:09,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 68. [2021-10-08 18:00:09,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 2.462686567164179) internal successors, (165), 67 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:09,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 165 transitions. [2021-10-08 18:00:09,441 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 165 transitions. Word has length 15 [2021-10-08 18:00:09,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:00:09,441 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 165 transitions. [2021-10-08 18:00:09,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:09,442 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 165 transitions. [2021-10-08 18:00:09,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 18:00:09,443 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:00:09,443 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:00:09,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-08 18:00:09,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:00:09,655 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:00:09,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:00:09,656 INFO L82 PathProgramCache]: Analyzing trace with hash -678704774, now seen corresponding path program 5 times [2021-10-08 18:00:09,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:00:09,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [301859518] [2021-10-08 18:00:09,657 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:00:09,658 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:00:09,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:00:09,659 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:00:09,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-08 18:00:09,806 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:00:09,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:00:09,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 18:00:09,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:00:10,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:10,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:00:11,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:11,122 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:00:11,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [301859518] [2021-10-08 18:00:11,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [301859518] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:00:11,122 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:00:11,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 18:00:11,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107140365] [2021-10-08 18:00:11,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 18:00:11,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:00:11,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 18:00:11,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2021-10-08 18:00:11,125 INFO L87 Difference]: Start difference. First operand 68 states and 165 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:12,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:00:12,938 INFO L93 Difference]: Finished difference Result 178 states and 379 transitions. [2021-10-08 18:00:12,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 18:00:12,939 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 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 15 [2021-10-08 18:00:12,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:00:12,940 INFO L225 Difference]: With dead ends: 178 [2021-10-08 18:00:12,941 INFO L226 Difference]: Without dead ends: 148 [2021-10-08 18:00:12,941 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1698.4ms TimeCoverageRelationStatistics Valid=212, Invalid=490, Unknown=0, NotChecked=0, Total=702 [2021-10-08 18:00:12,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-10-08 18:00:12,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 82. [2021-10-08 18:00:12,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 2.4691358024691357) internal successors, (200), 81 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:12,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 200 transitions. [2021-10-08 18:00:12,948 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 200 transitions. Word has length 15 [2021-10-08 18:00:12,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:00:12,948 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 200 transitions. [2021-10-08 18:00:12,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:12,948 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 200 transitions. [2021-10-08 18:00:12,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 18:00:12,949 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:00:12,949 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:00:12,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-08 18:00:13,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:00:13,167 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:00:13,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:00:13,168 INFO L82 PathProgramCache]: Analyzing trace with hash -596596934, now seen corresponding path program 6 times [2021-10-08 18:00:13,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:00:13,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1406265246] [2021-10-08 18:00:13,169 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:00:13,170 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:00:13,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:00:13,171 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:00:13,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-08 18:00:13,373 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 18:00:13,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:00:13,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 18:00:13,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:00:13,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:13,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:00:14,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:14,615 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:00:14,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1406265246] [2021-10-08 18:00:14,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1406265246] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:00:14,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:00:14,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 18:00:14,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745918234] [2021-10-08 18:00:14,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 18:00:14,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:00:14,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 18:00:14,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-10-08 18:00:14,618 INFO L87 Difference]: Start difference. First operand 82 states and 200 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:16,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:00:16,060 INFO L93 Difference]: Finished difference Result 141 states and 304 transitions. [2021-10-08 18:00:16,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 18:00:16,061 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 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 15 [2021-10-08 18:00:16,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:00:16,062 INFO L225 Difference]: With dead ends: 141 [2021-10-08 18:00:16,062 INFO L226 Difference]: Without dead ends: 126 [2021-10-08 18:00:16,063 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1454.5ms TimeCoverageRelationStatistics Valid=189, Invalid=461, Unknown=0, NotChecked=0, Total=650 [2021-10-08 18:00:16,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-10-08 18:00:16,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 86. [2021-10-08 18:00:16,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 2.5176470588235293) internal successors, (214), 85 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:16,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 214 transitions. [2021-10-08 18:00:16,069 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 214 transitions. Word has length 15 [2021-10-08 18:00:16,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:00:16,070 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 214 transitions. [2021-10-08 18:00:16,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:16,070 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 214 transitions. [2021-10-08 18:00:16,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 18:00:16,071 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:00:16,071 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:00:16,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-08 18:00:16,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:00:16,286 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:00:16,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:00:16,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1197356692, now seen corresponding path program 7 times [2021-10-08 18:00:16,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:00:16,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [177027332] [2021-10-08 18:00:16,288 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:00:16,288 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:00:16,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:00:16,290 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:00:16,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-08 18:00:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:00:16,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 18:00:16,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:00:16,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:16,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:00:17,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:17,841 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:00:17,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [177027332] [2021-10-08 18:00:17,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [177027332] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:00:17,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:00:17,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 18:00:17,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257797287] [2021-10-08 18:00:17,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 18:00:17,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:00:17,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 18:00:17,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2021-10-08 18:00:17,844 INFO L87 Difference]: Start difference. First operand 86 states and 214 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:19,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:00:19,109 INFO L93 Difference]: Finished difference Result 106 states and 243 transitions. [2021-10-08 18:00:19,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 18:00:19,110 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 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 15 [2021-10-08 18:00:19,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:00:19,111 INFO L225 Difference]: With dead ends: 106 [2021-10-08 18:00:19,111 INFO L226 Difference]: Without dead ends: 88 [2021-10-08 18:00:19,112 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1334.5ms TimeCoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2021-10-08 18:00:19,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-08 18:00:19,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 76. [2021-10-08 18:00:19,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 2.546666666666667) internal successors, (191), 75 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:19,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 191 transitions. [2021-10-08 18:00:19,118 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 191 transitions. Word has length 15 [2021-10-08 18:00:19,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:00:19,118 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 191 transitions. [2021-10-08 18:00:19,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:19,118 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 191 transitions. [2021-10-08 18:00:19,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 18:00:19,119 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:00:19,119 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:00:19,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-08 18:00:19,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:00:19,333 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:00:19,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:00:19,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1232047078, now seen corresponding path program 8 times [2021-10-08 18:00:19,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:00:19,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [536013301] [2021-10-08 18:00:19,334 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:00:19,335 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:00:19,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:00:19,336 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:00:19,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-08 18:00:19,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:00:19,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:00:19,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 18:00:19,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:00:19,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:19,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:00:20,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:20,772 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:00:20,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [536013301] [2021-10-08 18:00:20,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [536013301] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:00:20,773 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:00:20,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 18:00:20,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038734839] [2021-10-08 18:00:20,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 18:00:20,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:00:20,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 18:00:20,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-10-08 18:00:20,776 INFO L87 Difference]: Start difference. First operand 76 states and 191 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:23,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:00:23,143 INFO L93 Difference]: Finished difference Result 226 states and 493 transitions. [2021-10-08 18:00:23,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-08 18:00:23,144 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 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 15 [2021-10-08 18:00:23,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:00:23,146 INFO L225 Difference]: With dead ends: 226 [2021-10-08 18:00:23,146 INFO L226 Difference]: Without dead ends: 196 [2021-10-08 18:00:23,147 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 2084.4ms TimeCoverageRelationStatistics Valid=247, Invalid=565, Unknown=0, NotChecked=0, Total=812 [2021-10-08 18:00:23,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-10-08 18:00:23,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 104. [2021-10-08 18:00:23,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 2.533980582524272) internal successors, (261), 103 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:23,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 261 transitions. [2021-10-08 18:00:23,153 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 261 transitions. Word has length 15 [2021-10-08 18:00:23,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:00:23,153 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 261 transitions. [2021-10-08 18:00:23,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:23,154 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 261 transitions. [2021-10-08 18:00:23,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 18:00:23,155 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:00:23,155 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:00:23,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-08 18:00:23,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:00:23,362 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:00:23,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:00:23,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1149939238, now seen corresponding path program 9 times [2021-10-08 18:00:23,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:00:23,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1349105056] [2021-10-08 18:00:23,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:00:23,364 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:00:23,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:00:23,366 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:00:23,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-08 18:00:23,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 18:00:23,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:00:23,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 18:00:23,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:00:23,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:23,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:00:24,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:24,781 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:00:24,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1349105056] [2021-10-08 18:00:24,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1349105056] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:00:24,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:00:24,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 18:00:24,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886896315] [2021-10-08 18:00:24,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 18:00:24,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:00:24,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 18:00:24,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-10-08 18:00:24,784 INFO L87 Difference]: Start difference. First operand 104 states and 261 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:26,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:00:26,640 INFO L93 Difference]: Finished difference Result 175 states and 388 transitions. [2021-10-08 18:00:26,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 18:00:26,641 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 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 15 [2021-10-08 18:00:26,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:00:26,642 INFO L225 Difference]: With dead ends: 175 [2021-10-08 18:00:26,643 INFO L226 Difference]: Without dead ends: 160 [2021-10-08 18:00:26,643 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1846.1ms TimeCoverageRelationStatistics Valid=219, Invalid=537, Unknown=0, NotChecked=0, Total=756 [2021-10-08 18:00:26,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-08 18:00:26,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 102. [2021-10-08 18:00:26,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 2.514851485148515) internal successors, (254), 101 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) [2021-10-08 18:00:26,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 254 transitions. [2021-10-08 18:00:26,649 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 254 transitions. Word has length 15 [2021-10-08 18:00:26,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:00:26,649 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 254 transitions. [2021-10-08 18:00:26,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:26,650 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 254 transitions. [2021-10-08 18:00:26,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 18:00:26,651 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:00:26,651 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:00:26,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-08 18:00:26,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:00:26,864 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:00:26,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:00:26,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1750698996, now seen corresponding path program 10 times [2021-10-08 18:00:26,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:00:26,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1019538353] [2021-10-08 18:00:26,867 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:00:26,867 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:00:26,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:00:26,868 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:00:26,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-08 18:00:27,097 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:00:27,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:00:27,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 18:00:27,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:00:27,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:27,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:00:28,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:28,364 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:00:28,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1019538353] [2021-10-08 18:00:28,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1019538353] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:00:28,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:00:28,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 18:00:28,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720441499] [2021-10-08 18:00:28,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 18:00:28,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:00:28,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 18:00:28,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-10-08 18:00:28,367 INFO L87 Difference]: Start difference. First operand 102 states and 254 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:30,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:00:30,073 INFO L93 Difference]: Finished difference Result 154 states and 339 transitions. [2021-10-08 18:00:30,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 18:00:30,074 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 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 15 [2021-10-08 18:00:30,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:00:30,075 INFO L225 Difference]: With dead ends: 154 [2021-10-08 18:00:30,075 INFO L226 Difference]: Without dead ends: 136 [2021-10-08 18:00:30,076 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1747.7ms TimeCoverageRelationStatistics Valid=184, Invalid=466, Unknown=0, NotChecked=0, Total=650 [2021-10-08 18:00:30,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-10-08 18:00:30,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 98. [2021-10-08 18:00:30,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 2.4742268041237114) internal successors, (240), 97 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:30,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 240 transitions. [2021-10-08 18:00:30,083 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 240 transitions. Word has length 15 [2021-10-08 18:00:30,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:00:30,084 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 240 transitions. [2021-10-08 18:00:30,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:30,084 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 240 transitions. [2021-10-08 18:00:30,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 18:00:30,085 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:00:30,085 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:00:30,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-08 18:00:30,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:00:30,298 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:00:30,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:00:30,299 INFO L82 PathProgramCache]: Analyzing trace with hash 67957598, now seen corresponding path program 11 times [2021-10-08 18:00:30,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:00:30,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1770677316] [2021-10-08 18:00:30,300 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:00:30,301 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:00:30,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:00:30,302 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:00:30,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-08 18:00:30,567 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:00:30,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:00:30,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 18:00:30,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:00:30,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:30,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:00:31,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:31,780 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:00:31,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1770677316] [2021-10-08 18:00:31,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1770677316] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:00:31,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:00:31,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 18:00:31,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082430767] [2021-10-08 18:00:31,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 18:00:31,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:00:31,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 18:00:31,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-10-08 18:00:31,789 INFO L87 Difference]: Start difference. First operand 98 states and 240 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:33,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:00:33,182 INFO L93 Difference]: Finished difference Result 128 states and 287 transitions. [2021-10-08 18:00:33,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-08 18:00:33,184 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 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 15 [2021-10-08 18:00:33,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:00:33,185 INFO L225 Difference]: With dead ends: 128 [2021-10-08 18:00:33,185 INFO L226 Difference]: Without dead ends: 104 [2021-10-08 18:00:33,185 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1443.3ms TimeCoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2021-10-08 18:00:33,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-10-08 18:00:33,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 90. [2021-10-08 18:00:33,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 2.49438202247191) internal successors, (222), 89 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:33,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 222 transitions. [2021-10-08 18:00:33,190 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 222 transitions. Word has length 15 [2021-10-08 18:00:33,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:00:33,190 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 222 transitions. [2021-10-08 18:00:33,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:33,190 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 222 transitions. [2021-10-08 18:00:33,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:00:33,191 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:00:33,191 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:00:33,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-08 18:00:33,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:00:33,398 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:00:33,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:00:33,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1965291756, now seen corresponding path program 12 times [2021-10-08 18:00:33,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:00:33,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749440072] [2021-10-08 18:00:33,399 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:00:33,400 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:00:33,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:00:33,401 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:00:33,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-08 18:00:33,703 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 18:00:33,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:00:33,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 18:00:33,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:00:34,124 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:34,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:00:35,968 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:35,968 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:00:35,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1749440072] [2021-10-08 18:00:35,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1749440072] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:00:35,968 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:00:35,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:00:35,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110669609] [2021-10-08 18:00:35,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:00:35,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:00:35,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:00:35,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:00:35,970 INFO L87 Difference]: Start difference. First operand 90 states and 222 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:42,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:00:42,408 INFO L93 Difference]: Finished difference Result 282 states and 621 transitions. [2021-10-08 18:00:42,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-08 18:00:42,409 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 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 17 [2021-10-08 18:00:42,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:00:42,412 INFO L225 Difference]: With dead ends: 282 [2021-10-08 18:00:42,412 INFO L226 Difference]: Without dead ends: 258 [2021-10-08 18:00:42,413 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 5676.6ms TimeCoverageRelationStatistics Valid=530, Invalid=1362, Unknown=0, NotChecked=0, Total=1892 [2021-10-08 18:00:42,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-10-08 18:00:42,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 120. [2021-10-08 18:00:42,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 2.73109243697479) internal successors, (325), 119 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:42,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 325 transitions. [2021-10-08 18:00:42,421 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 325 transitions. Word has length 17 [2021-10-08 18:00:42,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:00:42,421 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 325 transitions. [2021-10-08 18:00:42,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:42,421 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 325 transitions. [2021-10-08 18:00:42,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:00:42,422 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:00:42,423 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:00:42,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-08 18:00:42,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:00:42,637 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:00:42,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:00:42,637 INFO L82 PathProgramCache]: Analyzing trace with hash 2047399596, now seen corresponding path program 13 times [2021-10-08 18:00:42,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:00:42,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [807666788] [2021-10-08 18:00:42,639 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:00:42,639 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:00:42,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:00:42,641 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:00:42,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-08 18:00:42,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:00:42,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 18:00:42,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:00:43,378 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:43,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:00:45,225 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:45,225 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:00:45,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [807666788] [2021-10-08 18:00:45,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [807666788] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:00:45,226 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:00:45,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:00:45,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041494692] [2021-10-08 18:00:45,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:00:45,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:00:45,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:00:45,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:00:45,227 INFO L87 Difference]: Start difference. First operand 120 states and 325 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:51,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:00:51,061 INFO L93 Difference]: Finished difference Result 251 states and 539 transitions. [2021-10-08 18:00:51,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-08 18:00:51,062 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 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 17 [2021-10-08 18:00:51,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:00:51,064 INFO L225 Difference]: With dead ends: 251 [2021-10-08 18:00:51,064 INFO L226 Difference]: Without dead ends: 236 [2021-10-08 18:00:51,066 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 5615.2ms TimeCoverageRelationStatistics Valid=410, Invalid=1072, Unknown=0, NotChecked=0, Total=1482 [2021-10-08 18:00:51,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-10-08 18:00:51,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 112. [2021-10-08 18:00:51,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 2.6036036036036037) internal successors, (289), 111 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:51,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 289 transitions. [2021-10-08 18:00:51,072 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 289 transitions. Word has length 17 [2021-10-08 18:00:51,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:00:51,073 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 289 transitions. [2021-10-08 18:00:51,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:51,073 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 289 transitions. [2021-10-08 18:00:51,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:00:51,074 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:00:51,074 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:00:51,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-08 18:00:51,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:00:51,283 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:00:51,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:00:51,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1446639838, now seen corresponding path program 14 times [2021-10-08 18:00:51,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:00:51,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [470432013] [2021-10-08 18:00:51,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:00:51,285 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:00:51,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:00:51,286 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:00:51,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-08 18:00:51,636 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:00:51,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:00:51,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 18:00:51,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:00:52,051 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:52,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:00:53,988 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:53,988 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:00:53,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [470432013] [2021-10-08 18:00:53,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [470432013] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:00:53,989 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:00:53,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:00:53,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094011214] [2021-10-08 18:00:53,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:00:53,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:00:53,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:00:53,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:00:53,991 INFO L87 Difference]: Start difference. First operand 112 states and 289 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:03,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:01:03,067 INFO L93 Difference]: Finished difference Result 244 states and 548 transitions. [2021-10-08 18:01:03,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-08 18:01:03,068 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 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 17 [2021-10-08 18:01:03,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:01:03,070 INFO L225 Difference]: With dead ends: 244 [2021-10-08 18:01:03,070 INFO L226 Difference]: Without dead ends: 224 [2021-10-08 18:01:03,071 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 8473.4ms TimeCoverageRelationStatistics Valid=528, Invalid=1542, Unknown=0, NotChecked=0, Total=2070 [2021-10-08 18:01:03,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-10-08 18:01:03,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 118. [2021-10-08 18:01:03,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 2.7777777777777777) internal successors, (325), 117 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:03,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 325 transitions. [2021-10-08 18:01:03,078 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 325 transitions. Word has length 17 [2021-10-08 18:01:03,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:01:03,078 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 325 transitions. [2021-10-08 18:01:03,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:03,078 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 325 transitions. [2021-10-08 18:01:03,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:01:03,079 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:01:03,079 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:01:03,092 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-10-08 18:01:03,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:01:03,291 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:01:03,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:01:03,292 INFO L82 PathProgramCache]: Analyzing trace with hash 38007212, now seen corresponding path program 15 times [2021-10-08 18:01:03,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:01:03,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2093626404] [2021-10-08 18:01:03,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:01:03,293 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:01:03,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:01:03,294 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:01:03,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-08 18:01:03,713 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 18:01:03,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:01:03,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 18:01:03,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:01:04,113 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:01:04,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:01:05,713 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:01:05,713 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:01:05,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2093626404] [2021-10-08 18:01:05,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2093626404] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:01:05,714 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:01:05,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:01:05,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306010300] [2021-10-08 18:01:05,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:01:05,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:01:05,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:01:05,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:01:05,716 INFO L87 Difference]: Start difference. First operand 118 states and 325 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:10,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:01:10,570 INFO L93 Difference]: Finished difference Result 219 states and 507 transitions. [2021-10-08 18:01:10,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-08 18:01:10,571 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 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 17 [2021-10-08 18:01:10,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:01:10,573 INFO L225 Difference]: With dead ends: 219 [2021-10-08 18:01:10,573 INFO L226 Difference]: Without dead ends: 204 [2021-10-08 18:01:10,574 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 4874.2ms TimeCoverageRelationStatistics Valid=309, Invalid=1251, Unknown=0, NotChecked=0, Total=1560 [2021-10-08 18:01:10,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-10-08 18:01:10,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 128. [2021-10-08 18:01:10,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 2.7874015748031495) internal successors, (354), 127 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:10,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 354 transitions. [2021-10-08 18:01:10,581 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 354 transitions. Word has length 17 [2021-10-08 18:01:10,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:01:10,581 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 354 transitions. [2021-10-08 18:01:10,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:10,581 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 354 transitions. [2021-10-08 18:01:10,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:01:10,582 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:01:10,582 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:01:10,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-08 18:01:10,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:01:10,785 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:01:10,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:01:10,785 INFO L82 PathProgramCache]: Analyzing trace with hash 930181918, now seen corresponding path program 16 times [2021-10-08 18:01:10,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:01:10,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2020151026] [2021-10-08 18:01:10,786 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:01:10,787 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:01:10,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:01:10,788 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:01:10,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-08 18:01:11,148 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:01:11,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:01:11,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 18:01:11,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:01:11,614 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:01:11,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:01:13,292 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:01:13,292 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:01:13,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2020151026] [2021-10-08 18:01:13,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2020151026] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:01:13,293 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:01:13,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:01:13,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085969442] [2021-10-08 18:01:13,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:01:13,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:01:13,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:01:13,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:01:13,295 INFO L87 Difference]: Start difference. First operand 128 states and 354 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:16,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:01:16,870 INFO L93 Difference]: Finished difference Result 217 states and 502 transitions. [2021-10-08 18:01:16,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 18:01:16,871 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 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 17 [2021-10-08 18:01:16,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:01:16,872 INFO L225 Difference]: With dead ends: 217 [2021-10-08 18:01:16,872 INFO L226 Difference]: Without dead ends: 202 [2021-10-08 18:01:16,873 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 3727.5ms TimeCoverageRelationStatistics Valid=234, Invalid=888, Unknown=0, NotChecked=0, Total=1122 [2021-10-08 18:01:16,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-10-08 18:01:16,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 136. [2021-10-08 18:01:16,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 2.740740740740741) internal successors, (370), 135 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:16,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 370 transitions. [2021-10-08 18:01:16,878 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 370 transitions. Word has length 17 [2021-10-08 18:01:16,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:01:16,879 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 370 transitions. [2021-10-08 18:01:16,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:16,879 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 370 transitions. [2021-10-08 18:01:16,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:01:16,880 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:01:16,880 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:01:16,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-08 18:01:17,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:01:17,094 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:01:17,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:01:17,095 INFO L82 PathProgramCache]: Analyzing trace with hash 545710992, now seen corresponding path program 17 times [2021-10-08 18:01:17,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:01:17,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1561916965] [2021-10-08 18:01:17,096 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:01:17,096 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:01:17,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:01:17,098 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:01:17,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-08 18:01:17,485 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 18:01:17,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:01:17,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-08 18:01:17,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:01:17,900 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:01:17,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:01:19,558 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:01:19,558 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:01:19,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1561916965] [2021-10-08 18:01:19,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1561916965] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:01:19,559 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:01:19,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:01:19,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851080458] [2021-10-08 18:01:19,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:01:19,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:01:19,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:01:19,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:01:19,561 INFO L87 Difference]: Start difference. First operand 136 states and 370 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:27,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:01:27,100 INFO L93 Difference]: Finished difference Result 388 states and 908 transitions. [2021-10-08 18:01:27,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-08 18:01:27,102 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 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 17 [2021-10-08 18:01:27,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:01:27,104 INFO L225 Difference]: With dead ends: 388 [2021-10-08 18:01:27,104 INFO L226 Difference]: Without dead ends: 368 [2021-10-08 18:01:27,105 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 7246.2ms TimeCoverageRelationStatistics Valid=635, Invalid=1527, Unknown=0, NotChecked=0, Total=2162 [2021-10-08 18:01:27,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2021-10-08 18:01:27,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 178. [2021-10-08 18:01:27,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 2.9152542372881354) internal successors, (516), 177 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:27,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 516 transitions. [2021-10-08 18:01:27,115 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 516 transitions. Word has length 17 [2021-10-08 18:01:27,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:01:27,116 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 516 transitions. [2021-10-08 18:01:27,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:27,116 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 516 transitions. [2021-10-08 18:01:27,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:01:27,117 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:01:27,117 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:01:27,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-08 18:01:27,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:01:27,325 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:01:27,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:01:27,325 INFO L82 PathProgramCache]: Analyzing trace with hash 627818832, now seen corresponding path program 18 times [2021-10-08 18:01:27,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:01:27,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1769178759] [2021-10-08 18:01:27,326 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:01:27,327 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:01:27,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:01:27,328 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:01:27,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-08 18:01:27,790 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 18:01:27,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:01:27,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 18:01:27,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:01:28,236 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:01:28,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:01:29,717 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:01:29,717 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:01:29,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1769178759] [2021-10-08 18:01:29,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1769178759] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:01:29,718 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:01:29,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:01:29,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52513834] [2021-10-08 18:01:29,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:01:29,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:01:29,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:01:29,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:01:29,720 INFO L87 Difference]: Start difference. First operand 178 states and 516 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:34,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:01:34,611 INFO L93 Difference]: Finished difference Result 363 states and 832 transitions. [2021-10-08 18:01:34,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-08 18:01:34,612 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 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 17 [2021-10-08 18:01:34,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:01:34,616 INFO L225 Difference]: With dead ends: 363 [2021-10-08 18:01:34,616 INFO L226 Difference]: Without dead ends: 348 [2021-10-08 18:01:34,617 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 4551.4ms TimeCoverageRelationStatistics Valid=493, Invalid=1147, Unknown=0, NotChecked=0, Total=1640 [2021-10-08 18:01:34,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2021-10-08 18:01:34,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 168. [2021-10-08 18:01:34,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 2.820359281437126) internal successors, (471), 167 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:34,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 471 transitions. [2021-10-08 18:01:34,626 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 471 transitions. Word has length 17 [2021-10-08 18:01:34,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:01:34,627 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 471 transitions. [2021-10-08 18:01:34,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:34,627 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 471 transitions. [2021-10-08 18:01:34,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:01:34,628 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:01:34,628 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:01:34,644 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2021-10-08 18:01:34,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:01:34,848 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:01:34,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:01:34,849 INFO L82 PathProgramCache]: Analyzing trace with hash 27059074, now seen corresponding path program 19 times [2021-10-08 18:01:34,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:01:34,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [806299706] [2021-10-08 18:01:34,849 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:01:34,850 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:01:34,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:01:34,851 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:01:34,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-08 18:01:35,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:01:35,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 18:01:35,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:01:35,684 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:01:35,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:01:37,331 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:01:37,331 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:01:37,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [806299706] [2021-10-08 18:01:37,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [806299706] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:01:37,332 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:01:37,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:01:37,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133002959] [2021-10-08 18:01:37,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:01:37,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:01:37,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:01:37,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:01:37,334 INFO L87 Difference]: Start difference. First operand 168 states and 471 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:41,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:01:41,855 INFO L93 Difference]: Finished difference Result 334 states and 771 transitions. [2021-10-08 18:01:41,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-08 18:01:41,857 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 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 17 [2021-10-08 18:01:41,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:01:41,860 INFO L225 Difference]: With dead ends: 334 [2021-10-08 18:01:41,860 INFO L226 Difference]: Without dead ends: 316 [2021-10-08 18:01:41,861 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 4076.2ms TimeCoverageRelationStatistics Valid=403, Invalid=1157, Unknown=0, NotChecked=0, Total=1560 [2021-10-08 18:01:41,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-10-08 18:01:41,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 174. [2021-10-08 18:01:41,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 2.867052023121387) internal successors, (496), 173 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:41,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 496 transitions. [2021-10-08 18:01:41,870 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 496 transitions. Word has length 17 [2021-10-08 18:01:41,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:01:41,870 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 496 transitions. [2021-10-08 18:01:41,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:41,870 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 496 transitions. [2021-10-08 18:01:41,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:01:41,871 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:01:41,871 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:01:41,888 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-10-08 18:01:42,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:01:42,085 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:01:42,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:01:42,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1381573552, now seen corresponding path program 20 times [2021-10-08 18:01:42,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:01:42,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [24774096] [2021-10-08 18:01:42,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:01:42,087 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:01:42,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:01:42,088 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:01:42,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-08 18:01:42,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:01:42,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:01:42,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 18:01:42,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:01:42,987 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:01:42,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:01:44,625 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:01:44,626 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:01:44,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [24774096] [2021-10-08 18:01:44,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [24774096] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:01:44,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:01:44,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:01:44,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845327676] [2021-10-08 18:01:44,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:01:44,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:01:44,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:01:44,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:01:44,629 INFO L87 Difference]: Start difference. First operand 174 states and 496 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:48,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:01:48,373 INFO L93 Difference]: Finished difference Result 260 states and 639 transitions. [2021-10-08 18:01:48,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 18:01:48,374 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 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 17 [2021-10-08 18:01:48,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:01:48,375 INFO L225 Difference]: With dead ends: 260 [2021-10-08 18:01:48,375 INFO L226 Difference]: Without dead ends: 250 [2021-10-08 18:01:48,376 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 3798.5ms TimeCoverageRelationStatistics Valid=212, Invalid=978, Unknown=0, NotChecked=0, Total=1190 [2021-10-08 18:01:48,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-10-08 18:01:48,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 172. [2021-10-08 18:01:48,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 2.8830409356725144) internal successors, (493), 171 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:48,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 493 transitions. [2021-10-08 18:01:48,382 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 493 transitions. Word has length 17 [2021-10-08 18:01:48,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:01:48,383 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 493 transitions. [2021-10-08 18:01:48,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:48,383 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 493 transitions. [2021-10-08 18:01:48,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:01:48,384 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:01:48,384 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:01:48,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-08 18:01:48,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:01:48,598 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:01:48,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:01:48,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1128718800, now seen corresponding path program 21 times [2021-10-08 18:01:48,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:01:48,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1329383605] [2021-10-08 18:01:48,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:01:48,601 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:01:48,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:01:48,602 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:01:48,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-08 18:01:49,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 18:01:49,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:01:49,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 18:01:49,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:01:49,524 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:01:49,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:01:51,070 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:01:51,070 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:01:51,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1329383605] [2021-10-08 18:01:51,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1329383605] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:01:51,071 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:01:51,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:01:51,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984473759] [2021-10-08 18:01:51,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:01:51,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:01:51,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:01:51,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:01:51,073 INFO L87 Difference]: Start difference. First operand 172 states and 493 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:55,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:01:55,320 INFO L93 Difference]: Finished difference Result 286 states and 691 transitions. [2021-10-08 18:01:55,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-08 18:01:55,321 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 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 17 [2021-10-08 18:01:55,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:01:55,325 INFO L225 Difference]: With dead ends: 286 [2021-10-08 18:01:55,325 INFO L226 Difference]: Without dead ends: 264 [2021-10-08 18:01:55,326 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 3933.6ms TimeCoverageRelationStatistics Valid=374, Invalid=1032, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 18:01:55,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-10-08 18:01:55,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 172. [2021-10-08 18:01:55,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 2.8947368421052633) internal successors, (495), 171 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:55,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 495 transitions. [2021-10-08 18:01:55,333 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 495 transitions. Word has length 17 [2021-10-08 18:01:55,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:01:55,333 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 495 transitions. [2021-10-08 18:01:55,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:55,334 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 495 transitions. [2021-10-08 18:01:55,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:01:55,335 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:01:55,335 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:01:55,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-08 18:01:55,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:01:55,550 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:01:55,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:01:55,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1220561864, now seen corresponding path program 22 times [2021-10-08 18:01:55,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:01:55,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1868066362] [2021-10-08 18:01:55,551 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:01:55,552 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:01:55,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:01:55,553 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:01:55,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-08 18:01:56,073 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:01:56,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:01:56,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 18:01:56,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:01:56,470 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:01:56,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:01:58,455 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:01:58,455 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:01:58,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1868066362] [2021-10-08 18:01:58,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1868066362] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:01:58,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:01:58,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:01:58,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036189336] [2021-10-08 18:01:58,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:01:58,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:01:58,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:01:58,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:01:58,458 INFO L87 Difference]: Start difference. First operand 172 states and 495 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:02:06,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:02:06,194 INFO L93 Difference]: Finished difference Result 415 states and 1008 transitions. [2021-10-08 18:02:06,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-08 18:02:06,195 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 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 17 [2021-10-08 18:02:06,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:02:06,197 INFO L225 Difference]: With dead ends: 415 [2021-10-08 18:02:06,198 INFO L226 Difference]: Without dead ends: 386 [2021-10-08 18:02:06,199 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 7091.1ms TimeCoverageRelationStatistics Valid=591, Invalid=1571, Unknown=0, NotChecked=0, Total=2162 [2021-10-08 18:02:06,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2021-10-08 18:02:06,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 216. [2021-10-08 18:02:06,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 3.0093023255813955) internal successors, (647), 215 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:02:06,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 647 transitions. [2021-10-08 18:02:06,220 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 647 transitions. Word has length 17 [2021-10-08 18:02:06,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:02:06,221 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 647 transitions. [2021-10-08 18:02:06,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:02:06,221 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 647 transitions. [2021-10-08 18:02:06,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:02:06,222 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:02:06,222 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:02:06,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-08 18:02:06,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:02:06,431 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:02:06,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:02:06,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1302669704, now seen corresponding path program 23 times [2021-10-08 18:02:06,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:02:06,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [636639206] [2021-10-08 18:02:06,433 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:02:06,433 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:02:06,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:02:06,434 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:02:06,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-08 18:02:06,952 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 18:02:06,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:02:06,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 18:02:06,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:02:07,362 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:02:07,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:02:09,165 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:02:09,165 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:02:09,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [636639206] [2021-10-08 18:02:09,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [636639206] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:02:09,166 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:02:09,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:02:09,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422032862] [2021-10-08 18:02:09,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:02:09,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:02:09,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:02:09,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:02:09,167 INFO L87 Difference]: Start difference. First operand 216 states and 647 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:02:15,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:02:15,472 INFO L93 Difference]: Finished difference Result 369 states and 904 transitions. [2021-10-08 18:02:15,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-08 18:02:15,473 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 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 17 [2021-10-08 18:02:15,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:02:15,476 INFO L225 Difference]: With dead ends: 369 [2021-10-08 18:02:15,476 INFO L226 Difference]: Without dead ends: 354 [2021-10-08 18:02:15,477 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 5840.4ms TimeCoverageRelationStatistics Valid=460, Invalid=1180, Unknown=0, NotChecked=0, Total=1640 [2021-10-08 18:02:15,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-10-08 18:02:15,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 200. [2021-10-08 18:02:15,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 2.899497487437186) internal successors, (577), 199 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:02:15,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 577 transitions. [2021-10-08 18:02:15,486 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 577 transitions. Word has length 17 [2021-10-08 18:02:15,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:02:15,486 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 577 transitions. [2021-10-08 18:02:15,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:02:15,487 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 577 transitions. [2021-10-08 18:02:15,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:02:15,488 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:02:15,488 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:02:15,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-08 18:02:15,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:02:15,703 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:02:15,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:02:15,704 INFO L82 PathProgramCache]: Analyzing trace with hash 701909946, now seen corresponding path program 24 times [2021-10-08 18:02:15,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:02:15,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766138773] [2021-10-08 18:02:15,705 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:02:15,706 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:02:15,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:02:15,707 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:02:15,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-08 18:02:16,300 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-08 18:02:16,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:02:16,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 18:02:16,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:02:16,702 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:02:16,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:02:18,625 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:02:18,625 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:02:18,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [766138773] [2021-10-08 18:02:18,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [766138773] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:02:18,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:02:18,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:02:18,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150358785] [2021-10-08 18:02:18,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:02:18,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:02:18,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:02:18,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:02:18,628 INFO L87 Difference]: Start difference. First operand 200 states and 577 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:02:28,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:02:28,359 INFO L93 Difference]: Finished difference Result 356 states and 872 transitions. [2021-10-08 18:02:28,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-08 18:02:28,360 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 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 17 [2021-10-08 18:02:28,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:02:28,363 INFO L225 Difference]: With dead ends: 356 [2021-10-08 18:02:28,363 INFO L226 Difference]: Without dead ends: 336 [2021-10-08 18:02:28,364 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 8826.5ms TimeCoverageRelationStatistics Valid=563, Invalid=1693, Unknown=0, NotChecked=0, Total=2256 [2021-10-08 18:02:28,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2021-10-08 18:02:28,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 196. [2021-10-08 18:02:28,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 2.958974358974359) internal successors, (577), 195 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:02:28,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 577 transitions. [2021-10-08 18:02:28,373 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 577 transitions. Word has length 17 [2021-10-08 18:02:28,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:02:28,373 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 577 transitions. [2021-10-08 18:02:28,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:02:28,373 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 577 transitions. [2021-10-08 18:02:28,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:02:28,374 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:02:28,375 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:02:28,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-08 18:02:28,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:02:28,590 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:02:28,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:02:28,592 INFO L82 PathProgramCache]: Analyzing trace with hash -706722680, now seen corresponding path program 25 times [2021-10-08 18:02:28,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:02:28,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1366052121] [2021-10-08 18:02:28,592 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:02:28,593 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:02:28,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:02:28,594 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:02:28,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-08 18:02:29,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:02:29,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 18:02:29,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:02:29,619 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:02:29,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:02:31,303 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:02:31,304 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:02:31,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1366052121] [2021-10-08 18:02:31,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1366052121] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:02:31,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:02:31,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:02:31,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616041195] [2021-10-08 18:02:31,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:02:31,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:02:31,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:02:31,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:02:31,307 INFO L87 Difference]: Start difference. First operand 196 states and 577 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:02:37,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:02:37,992 INFO L93 Difference]: Finished difference Result 307 states and 782 transitions. [2021-10-08 18:02:37,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-08 18:02:37,993 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 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 17 [2021-10-08 18:02:37,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:02:37,995 INFO L225 Difference]: With dead ends: 307 [2021-10-08 18:02:37,995 INFO L226 Difference]: Without dead ends: 292 [2021-10-08 18:02:37,996 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 6230.5ms TimeCoverageRelationStatistics Valid=336, Invalid=1386, Unknown=0, NotChecked=0, Total=1722 [2021-10-08 18:02:37,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-10-08 18:02:38,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 190. [2021-10-08 18:02:38,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 2.941798941798942) internal successors, (556), 189 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:02:38,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 556 transitions. [2021-10-08 18:02:38,004 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 556 transitions. Word has length 17 [2021-10-08 18:02:38,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:02:38,004 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 556 transitions. [2021-10-08 18:02:38,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:02:38,005 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 556 transitions. [2021-10-08 18:02:38,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:02:38,005 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:02:38,006 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:02:38,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-08 18:02:38,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:02:38,220 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:02:38,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:02:38,221 INFO L82 PathProgramCache]: Analyzing trace with hash 185452026, now seen corresponding path program 26 times [2021-10-08 18:02:38,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:02:38,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2103230756] [2021-10-08 18:02:38,222 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:02:38,222 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:02:38,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:02:38,224 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:02:38,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-08 18:02:38,867 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:02:38,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:02:38,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 18:02:38,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:02:39,265 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:02:39,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:02:40,949 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:02:40,950 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:02:40,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2103230756] [2021-10-08 18:02:40,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2103230756] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:02:40,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:02:40,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:02:40,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441763716] [2021-10-08 18:02:40,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:02:40,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:02:40,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:02:40,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:02:40,952 INFO L87 Difference]: Start difference. First operand 190 states and 556 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:02:45,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:02:45,321 INFO L93 Difference]: Finished difference Result 291 states and 728 transitions. [2021-10-08 18:02:45,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-08 18:02:45,323 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 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 17 [2021-10-08 18:02:45,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:02:45,325 INFO L225 Difference]: With dead ends: 291 [2021-10-08 18:02:45,325 INFO L226 Difference]: Without dead ends: 276 [2021-10-08 18:02:45,326 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 4348.1ms TimeCoverageRelationStatistics Valid=247, Invalid=943, Unknown=0, NotChecked=0, Total=1190 [2021-10-08 18:02:45,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-10-08 18:02:45,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 192. [2021-10-08 18:02:45,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 2.926701570680628) internal successors, (559), 191 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:02:45,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 559 transitions. [2021-10-08 18:02:45,333 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 559 transitions. Word has length 17 [2021-10-08 18:02:45,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:02:45,333 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 559 transitions. [2021-10-08 18:02:45,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:02:45,334 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 559 transitions. [2021-10-08 18:02:45,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:02:45,335 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:02:45,335 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:02:45,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-08 18:02:45,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:02:45,550 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:02:45,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:02:45,551 INFO L82 PathProgramCache]: Analyzing trace with hash -199018900, now seen corresponding path program 27 times [2021-10-08 18:02:45,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:02:45,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1894247406] [2021-10-08 18:02:45,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:02:45,552 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:02:45,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:02:45,553 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:02:45,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-08 18:02:46,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 18:02:46,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:02:46,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 18:02:46,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:02:46,602 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:02:46,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:02:48,026 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:02:48,026 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:02:48,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1894247406] [2021-10-08 18:02:48,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1894247406] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:02:48,027 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:02:48,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:02:48,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365662465] [2021-10-08 18:02:48,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:02:48,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:02:48,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:02:48,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:02:48,029 INFO L87 Difference]: Start difference. First operand 192 states and 559 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:02:53,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:02:53,387 INFO L93 Difference]: Finished difference Result 483 states and 1171 transitions. [2021-10-08 18:02:53,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-08 18:02:53,389 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 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 17 [2021-10-08 18:02:53,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:02:53,391 INFO L225 Difference]: With dead ends: 483 [2021-10-08 18:02:53,391 INFO L226 Difference]: Without dead ends: 458 [2021-10-08 18:02:53,392 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 4619.1ms TimeCoverageRelationStatistics Valid=549, Invalid=1343, Unknown=0, NotChecked=0, Total=1892 [2021-10-08 18:02:53,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-10-08 18:02:53,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 238. [2021-10-08 18:02:53,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 3.042194092827004) internal successors, (721), 237 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:02:53,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 721 transitions. [2021-10-08 18:02:53,402 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 721 transitions. Word has length 17 [2021-10-08 18:02:53,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:02:53,403 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 721 transitions. [2021-10-08 18:02:53,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:02:53,403 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 721 transitions. [2021-10-08 18:02:53,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:02:53,404 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:02:53,404 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:02:53,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-08 18:02:53,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:02:53,618 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:02:53,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:02:53,619 INFO L82 PathProgramCache]: Analyzing trace with hash -116911060, now seen corresponding path program 28 times [2021-10-08 18:02:53,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:02:53,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2112787551] [2021-10-08 18:02:53,620 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:02:53,620 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:02:53,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:02:53,622 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:02:53,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-08 18:02:54,294 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:02:54,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:02:54,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 18:02:54,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:02:54,716 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:02:54,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:02:56,187 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:02:56,187 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:02:56,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2112787551] [2021-10-08 18:02:56,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2112787551] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:02:56,188 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:02:56,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:02:56,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540248912] [2021-10-08 18:02:56,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:02:56,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:02:56,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:02:56,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:02:56,190 INFO L87 Difference]: Start difference. First operand 238 states and 721 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:02,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:03:02,162 INFO L93 Difference]: Finished difference Result 455 states and 1091 transitions. [2021-10-08 18:03:02,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-08 18:03:02,163 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 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 17 [2021-10-08 18:03:02,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:03:02,167 INFO L225 Difference]: With dead ends: 455 [2021-10-08 18:03:02,167 INFO L226 Difference]: Without dead ends: 440 [2021-10-08 18:03:02,168 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 5256.4ms TimeCoverageRelationStatistics Valid=576, Invalid=1404, Unknown=0, NotChecked=0, Total=1980 [2021-10-08 18:03:02,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-10-08 18:03:02,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 226. [2021-10-08 18:03:02,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 2.9644444444444447) internal successors, (667), 225 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:02,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 667 transitions. [2021-10-08 18:03:02,178 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 667 transitions. Word has length 17 [2021-10-08 18:03:02,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:03:02,178 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 667 transitions. [2021-10-08 18:03:02,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:02,178 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 667 transitions. [2021-10-08 18:03:02,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:03:02,179 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:03:02,180 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:03:02,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-08 18:03:02,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:03:02,396 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:03:02,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:03:02,397 INFO L82 PathProgramCache]: Analyzing trace with hash -717670818, now seen corresponding path program 29 times [2021-10-08 18:03:02,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:03:02,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [546228143] [2021-10-08 18:03:02,398 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:03:02,398 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:03:02,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:03:02,399 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:03:02,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-08 18:03:03,079 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:03:03,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:03:03,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-08 18:03:03,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:03:03,494 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:03:03,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:03:05,271 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:03:05,271 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:03:05,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [546228143] [2021-10-08 18:03:05,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [546228143] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:03:05,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:03:05,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:03:05,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282867871] [2021-10-08 18:03:05,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:03:05,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:03:05,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:03:05,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:03:05,274 INFO L87 Difference]: Start difference. First operand 226 states and 667 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:13,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:03:13,792 INFO L93 Difference]: Finished difference Result 400 states and 990 transitions. [2021-10-08 18:03:13,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-08 18:03:13,794 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 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 17 [2021-10-08 18:03:13,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:03:13,797 INFO L225 Difference]: With dead ends: 400 [2021-10-08 18:03:13,797 INFO L226 Difference]: Without dead ends: 382 [2021-10-08 18:03:13,798 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 8219.6ms TimeCoverageRelationStatistics Valid=515, Invalid=1465, Unknown=0, NotChecked=0, Total=1980 [2021-10-08 18:03:13,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-10-08 18:03:13,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 218. [2021-10-08 18:03:13,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 2.9262672811059907) internal successors, (635), 217 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:13,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 635 transitions. [2021-10-08 18:03:13,805 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 635 transitions. Word has length 17 [2021-10-08 18:03:13,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:03:13,805 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 635 transitions. [2021-10-08 18:03:13,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:13,806 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 635 transitions. [2021-10-08 18:03:13,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:03:13,806 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:03:13,807 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:03:13,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-10-08 18:03:14,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:03:14,008 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:03:14,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:03:14,009 INFO L82 PathProgramCache]: Analyzing trace with hash -2126303444, now seen corresponding path program 30 times [2021-10-08 18:03:14,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:03:14,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1521537776] [2021-10-08 18:03:14,010 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:03:14,010 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:03:14,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:03:14,012 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:03:14,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-08 18:03:14,750 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-08 18:03:14,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:03:14,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 18:03:14,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:03:15,159 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:03:15,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:03:16,861 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:03:16,861 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:03:16,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1521537776] [2021-10-08 18:03:16,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1521537776] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:03:16,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:03:16,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:03:16,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538518292] [2021-10-08 18:03:16,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:03:16,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:03:16,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:03:16,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:03:16,865 INFO L87 Difference]: Start difference. First operand 218 states and 635 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:21,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:03:21,497 INFO L93 Difference]: Finished difference Result 322 states and 817 transitions. [2021-10-08 18:03:21,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-08 18:03:21,498 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 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 17 [2021-10-08 18:03:21,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:03:21,500 INFO L225 Difference]: With dead ends: 322 [2021-10-08 18:03:21,500 INFO L226 Difference]: Without dead ends: 312 [2021-10-08 18:03:21,500 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 4445.5ms TimeCoverageRelationStatistics Valid=228, Invalid=1032, Unknown=0, NotChecked=0, Total=1260 [2021-10-08 18:03:21,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-10-08 18:03:21,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 216. [2021-10-08 18:03:21,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 2.911627906976744) internal successors, (626), 215 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:21,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 626 transitions. [2021-10-08 18:03:21,507 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 626 transitions. Word has length 17 [2021-10-08 18:03:21,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:03:21,507 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 626 transitions. [2021-10-08 18:03:21,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:21,508 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 626 transitions. [2021-10-08 18:03:21,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:03:21,509 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:03:21,509 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:03:21,524 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Ended with exit code 0 [2021-10-08 18:03:21,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:03:21,721 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:03:21,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:03:21,722 INFO L82 PathProgramCache]: Analyzing trace with hash 383988908, now seen corresponding path program 31 times [2021-10-08 18:03:21,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:03:21,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [219357339] [2021-10-08 18:03:21,723 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:03:21,723 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:03:21,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:03:21,724 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:03:21,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-08 18:03:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:03:22,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 18:03:22,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:03:22,854 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:03:22,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:03:24,335 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:03:24,335 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:03:24,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [219357339] [2021-10-08 18:03:24,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [219357339] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:03:24,336 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:03:24,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:03:24,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223782417] [2021-10-08 18:03:24,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:03:24,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:03:24,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:03:24,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:03:24,337 INFO L87 Difference]: Start difference. First operand 216 states and 626 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:28,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:03:28,718 INFO L93 Difference]: Finished difference Result 346 states and 861 transitions. [2021-10-08 18:03:28,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-08 18:03:28,719 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 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 17 [2021-10-08 18:03:28,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:03:28,721 INFO L225 Difference]: With dead ends: 346 [2021-10-08 18:03:28,721 INFO L226 Difference]: Without dead ends: 324 [2021-10-08 18:03:28,722 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 3965.3ms TimeCoverageRelationStatistics Valid=408, Invalid=1152, Unknown=0, NotChecked=0, Total=1560 [2021-10-08 18:03:28,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2021-10-08 18:03:28,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 176. [2021-10-08 18:03:28,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 2.9085714285714284) internal successors, (509), 175 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:28,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 509 transitions. [2021-10-08 18:03:28,726 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 509 transitions. Word has length 17 [2021-10-08 18:03:28,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:03:28,726 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 509 transitions. [2021-10-08 18:03:28,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:28,727 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 509 transitions. [2021-10-08 18:03:28,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:03:28,727 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:03:28,727 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:03:28,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-10-08 18:03:28,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:03:28,942 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:03:28,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:03:28,942 INFO L82 PathProgramCache]: Analyzing trace with hash 2034552424, now seen corresponding path program 32 times [2021-10-08 18:03:28,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:03:28,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1314631558] [2021-10-08 18:03:28,943 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:03:28,943 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:03:28,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:03:28,945 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:03:28,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-08 18:03:29,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:03:29,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:03:29,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 18:03:29,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:03:30,128 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:03:30,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:03:31,779 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:03:31,779 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:03:31,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1314631558] [2021-10-08 18:03:31,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1314631558] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:03:31,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:03:31,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:03:31,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975461363] [2021-10-08 18:03:31,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:03:31,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:03:31,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:03:31,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:03:31,781 INFO L87 Difference]: Start difference. First operand 176 states and 509 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:42,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:03:42,150 INFO L93 Difference]: Finished difference Result 455 states and 1118 transitions. [2021-10-08 18:03:42,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-08 18:03:42,151 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 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 17 [2021-10-08 18:03:42,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:03:42,153 INFO L225 Difference]: With dead ends: 455 [2021-10-08 18:03:42,153 INFO L226 Difference]: Without dead ends: 426 [2021-10-08 18:03:42,154 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 928 ImplicationChecksByTransitivity, 9844.4ms TimeCoverageRelationStatistics Valid=844, Invalid=2696, Unknown=0, NotChecked=0, Total=3540 [2021-10-08 18:03:42,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2021-10-08 18:03:42,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 216. [2021-10-08 18:03:42,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 3.0232558139534884) internal successors, (650), 215 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:42,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 650 transitions. [2021-10-08 18:03:42,162 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 650 transitions. Word has length 17 [2021-10-08 18:03:42,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:03:42,162 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 650 transitions. [2021-10-08 18:03:42,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:42,162 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 650 transitions. [2021-10-08 18:03:42,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:03:42,163 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:03:42,163 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:03:42,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-08 18:03:42,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:03:42,378 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:03:42,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:03:42,379 INFO L82 PathProgramCache]: Analyzing trace with hash 2116660264, now seen corresponding path program 33 times [2021-10-08 18:03:42,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:03:42,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [615046985] [2021-10-08 18:03:42,380 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:03:42,380 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:03:42,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:03:42,381 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:03:42,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-08 18:03:43,261 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 18:03:43,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:03:43,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 18:03:43,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:03:43,655 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:03:43,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:03:45,348 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:03:45,348 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:03:45,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [615046985] [2021-10-08 18:03:45,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [615046985] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:03:45,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:03:45,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:03:45,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818274987] [2021-10-08 18:03:45,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:03:45,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:03:45,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:03:45,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:03:45,350 INFO L87 Difference]: Start difference. First operand 216 states and 650 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:54,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:03:54,269 INFO L93 Difference]: Finished difference Result 398 states and 992 transitions. [2021-10-08 18:03:54,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-08 18:03:54,270 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 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 17 [2021-10-08 18:03:54,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:03:54,274 INFO L225 Difference]: With dead ends: 398 [2021-10-08 18:03:54,274 INFO L226 Difference]: Without dead ends: 388 [2021-10-08 18:03:54,275 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 8754.9ms TimeCoverageRelationStatistics Valid=620, Invalid=1930, Unknown=0, NotChecked=0, Total=2550 [2021-10-08 18:03:54,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2021-10-08 18:03:54,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 202. [2021-10-08 18:03:54,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 2.9303482587064678) internal successors, (589), 201 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:54,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 589 transitions. [2021-10-08 18:03:54,283 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 589 transitions. Word has length 17 [2021-10-08 18:03:54,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:03:54,284 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 589 transitions. [2021-10-08 18:03:54,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:54,284 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 589 transitions. [2021-10-08 18:03:54,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:03:54,285 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:03:54,285 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:03:54,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-10-08 18:03:54,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:03:54,499 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:03:54,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:03:54,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1515900506, now seen corresponding path program 34 times [2021-10-08 18:03:54,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:03:54,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [820185013] [2021-10-08 18:03:54,500 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:03:54,501 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:03:54,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:03:54,502 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:03:54,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-08 18:03:55,281 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:03:55,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:03:55,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 18:03:55,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:03:55,691 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:03:55,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:03:57,484 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:03:57,485 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:03:57,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [820185013] [2021-10-08 18:03:57,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [820185013] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:03:57,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:03:57,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:03:57,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145960655] [2021-10-08 18:03:57,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:03:57,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:03:57,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:03:57,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:03:57,487 INFO L87 Difference]: Start difference. First operand 202 states and 589 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:09,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:04:09,517 INFO L93 Difference]: Finished difference Result 380 states and 938 transitions. [2021-10-08 18:04:09,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-08 18:04:09,519 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 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 17 [2021-10-08 18:04:09,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:04:09,521 INFO L225 Difference]: With dead ends: 380 [2021-10-08 18:04:09,521 INFO L226 Difference]: Without dead ends: 360 [2021-10-08 18:04:09,523 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 9342.7ms TimeCoverageRelationStatistics Valid=652, Invalid=2318, Unknown=0, NotChecked=0, Total=2970 [2021-10-08 18:04:09,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-10-08 18:04:09,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 198. [2021-10-08 18:04:09,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 2.979695431472081) internal successors, (587), 197 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:09,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 587 transitions. [2021-10-08 18:04:09,531 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 587 transitions. Word has length 17 [2021-10-08 18:04:09,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:04:09,531 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 587 transitions. [2021-10-08 18:04:09,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:09,532 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 587 transitions. [2021-10-08 18:04:09,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:04:09,532 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:04:09,533 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:04:09,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-10-08 18:04:09,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:04:09,738 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:04:09,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:04:09,738 INFO L82 PathProgramCache]: Analyzing trace with hash 107267880, now seen corresponding path program 35 times [2021-10-08 18:04:09,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:04:09,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2100666112] [2021-10-08 18:04:09,739 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:04:09,740 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:04:09,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:04:09,741 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:04:09,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-10-08 18:04:10,596 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 18:04:10,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:04:10,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-08 18:04:10,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:04:10,976 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:04:10,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:04:12,261 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:04:12,261 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:04:12,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2100666112] [2021-10-08 18:04:12,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2100666112] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:04:12,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:04:12,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:04:12,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530876212] [2021-10-08 18:04:12,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:04:12,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:04:12,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:04:12,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:04:12,263 INFO L87 Difference]: Start difference. First operand 198 states and 587 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:19,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:04:19,399 INFO L93 Difference]: Finished difference Result 329 states and 836 transitions. [2021-10-08 18:04:19,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-08 18:04:19,403 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 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 17 [2021-10-08 18:04:19,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:04:19,406 INFO L225 Difference]: With dead ends: 329 [2021-10-08 18:04:19,406 INFO L226 Difference]: Without dead ends: 314 [2021-10-08 18:04:19,406 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 7053.2ms TimeCoverageRelationStatistics Valid=515, Invalid=2137, Unknown=0, NotChecked=0, Total=2652 [2021-10-08 18:04:19,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-10-08 18:04:19,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 200. [2021-10-08 18:04:19,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 2.9949748743718594) internal successors, (596), 199 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:19,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 596 transitions. [2021-10-08 18:04:19,414 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 596 transitions. Word has length 17 [2021-10-08 18:04:19,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:04:19,414 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 596 transitions. [2021-10-08 18:04:19,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:19,414 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 596 transitions. [2021-10-08 18:04:19,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:04:19,415 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:04:19,415 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:04:19,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Ended with exit code 0 [2021-10-08 18:04:19,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:04:19,629 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:04:19,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:04:19,630 INFO L82 PathProgramCache]: Analyzing trace with hash 999442586, now seen corresponding path program 36 times [2021-10-08 18:04:19,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:04:19,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1221268244] [2021-10-08 18:04:19,631 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:04:19,631 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:04:19,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:04:19,632 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:04:19,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-08 18:04:20,505 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 18:04:20,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:04:20,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 18:04:20,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:04:20,896 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:04:20,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:04:22,514 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:04:22,515 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:04:22,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1221268244] [2021-10-08 18:04:22,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1221268244] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:04:22,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:04:22,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:04:22,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582296136] [2021-10-08 18:04:22,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:04:22,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:04:22,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:04:22,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:04:22,517 INFO L87 Difference]: Start difference. First operand 200 states and 596 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:28,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:04:28,229 INFO L93 Difference]: Finished difference Result 303 states and 783 transitions. [2021-10-08 18:04:28,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-08 18:04:28,230 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 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 17 [2021-10-08 18:04:28,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:04:28,232 INFO L225 Difference]: With dead ends: 303 [2021-10-08 18:04:28,232 INFO L226 Difference]: Without dead ends: 288 [2021-10-08 18:04:28,232 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 5668.9ms TimeCoverageRelationStatistics Valid=327, Invalid=1233, Unknown=0, NotChecked=0, Total=1560 [2021-10-08 18:04:28,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-10-08 18:04:28,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 204. [2021-10-08 18:04:28,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 2.9950738916256157) internal successors, (608), 203 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:28,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 608 transitions. [2021-10-08 18:04:28,238 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 608 transitions. Word has length 17 [2021-10-08 18:04:28,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:04:28,239 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 608 transitions. [2021-10-08 18:04:28,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:28,239 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 608 transitions. [2021-10-08 18:04:28,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:04:28,240 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:04:28,240 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:04:28,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-10-08 18:04:28,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:04:28,456 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:04:28,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:04:28,457 INFO L82 PathProgramCache]: Analyzing trace with hash 614971660, now seen corresponding path program 37 times [2021-10-08 18:04:28,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:04:28,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2103377159] [2021-10-08 18:04:28,458 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:04:28,458 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:04:28,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:04:28,459 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:04:28,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-08 18:04:29,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:04:29,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 18:04:29,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:04:29,736 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:04:29,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:04:31,065 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:04:31,065 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:04:31,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2103377159] [2021-10-08 18:04:31,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2103377159] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:04:31,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:04:31,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:04:31,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633017134] [2021-10-08 18:04:31,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:04:31,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:04:31,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:04:31,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:04:31,068 INFO L87 Difference]: Start difference. First operand 204 states and 608 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:36,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:04:36,643 INFO L93 Difference]: Finished difference Result 487 states and 1192 transitions. [2021-10-08 18:04:36,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-08 18:04:36,644 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 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 17 [2021-10-08 18:04:36,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:04:36,647 INFO L225 Difference]: With dead ends: 487 [2021-10-08 18:04:36,647 INFO L226 Difference]: Without dead ends: 462 [2021-10-08 18:04:36,647 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 5072.5ms TimeCoverageRelationStatistics Valid=637, Invalid=1525, Unknown=0, NotChecked=0, Total=2162 [2021-10-08 18:04:36,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2021-10-08 18:04:36,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 240. [2021-10-08 18:04:36,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 3.0502092050209204) internal successors, (729), 239 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:36,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 729 transitions. [2021-10-08 18:04:36,657 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 729 transitions. Word has length 17 [2021-10-08 18:04:36,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:04:36,657 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 729 transitions. [2021-10-08 18:04:36,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:36,657 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 729 transitions. [2021-10-08 18:04:36,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:04:36,658 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:04:36,658 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:04:36,678 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Ended with exit code 0 [2021-10-08 18:04:36,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:04:36,872 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:04:36,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:04:36,873 INFO L82 PathProgramCache]: Analyzing trace with hash 697079500, now seen corresponding path program 38 times [2021-10-08 18:04:36,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:04:36,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1979972591] [2021-10-08 18:04:36,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:04:36,875 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:04:36,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:04:36,877 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:04:36,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-08 18:04:37,816 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:04:37,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:04:37,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 18:04:37,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:04:38,221 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:04:38,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:04:39,464 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:04:39,464 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:04:39,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1979972591] [2021-10-08 18:04:39,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1979972591] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:04:39,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:04:39,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:04:39,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467660054] [2021-10-08 18:04:39,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:04:39,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:04:39,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:04:39,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:04:39,467 INFO L87 Difference]: Start difference. First operand 240 states and 729 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:45,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:04:45,477 INFO L93 Difference]: Finished difference Result 447 states and 1081 transitions. [2021-10-08 18:04:45,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-08 18:04:45,478 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 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 17 [2021-10-08 18:04:45,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:04:45,480 INFO L225 Difference]: With dead ends: 447 [2021-10-08 18:04:45,480 INFO L226 Difference]: Without dead ends: 432 [2021-10-08 18:04:45,481 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 5728.7ms TimeCoverageRelationStatistics Valid=645, Invalid=1611, Unknown=0, NotChecked=0, Total=2256 [2021-10-08 18:04:45,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-10-08 18:04:45,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 230. [2021-10-08 18:04:45,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 229 states have (on average 2.986899563318777) internal successors, (684), 229 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:45,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 684 transitions. [2021-10-08 18:04:45,489 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 684 transitions. Word has length 17 [2021-10-08 18:04:45,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:04:45,490 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 684 transitions. [2021-10-08 18:04:45,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:45,490 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 684 transitions. [2021-10-08 18:04:45,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:04:45,491 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:04:45,491 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:04:45,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-10-08 18:04:45,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:04:45,706 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:04:45,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:04:45,706 INFO L82 PathProgramCache]: Analyzing trace with hash 96319742, now seen corresponding path program 39 times [2021-10-08 18:04:45,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:04:45,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1744325473] [2021-10-08 18:04:45,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:04:45,707 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:04:45,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:04:45,709 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:04:45,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-10-08 18:04:46,684 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 18:04:46,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:04:46,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 18:04:46,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:04:47,087 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:04:47,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:04:48,487 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:04:48,488 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:04:48,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1744325473] [2021-10-08 18:04:48,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1744325473] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:04:48,488 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:04:48,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:04:48,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289774279] [2021-10-08 18:04:48,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:04:48,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:04:48,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:04:48,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:04:48,490 INFO L87 Difference]: Start difference. First operand 230 states and 684 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:53,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:04:53,074 INFO L93 Difference]: Finished difference Result 390 states and 966 transitions. [2021-10-08 18:04:53,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-08 18:04:53,075 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 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 17 [2021-10-08 18:04:53,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:04:53,078 INFO L225 Difference]: With dead ends: 390 [2021-10-08 18:04:53,078 INFO L226 Difference]: Without dead ends: 372 [2021-10-08 18:04:53,078 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 4452.8ms TimeCoverageRelationStatistics Valid=472, Invalid=1334, Unknown=0, NotChecked=0, Total=1806 [2021-10-08 18:04:53,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2021-10-08 18:04:53,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 228. [2021-10-08 18:04:53,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 2.9647577092511015) internal successors, (673), 227 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:53,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 673 transitions. [2021-10-08 18:04:53,086 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 673 transitions. Word has length 17 [2021-10-08 18:04:53,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:04:53,086 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 673 transitions. [2021-10-08 18:04:53,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:53,087 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 673 transitions. [2021-10-08 18:04:53,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:04:53,088 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:04:53,088 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:04:53,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-10-08 18:04:53,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:04:53,307 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:04:53,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:04:53,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1312312884, now seen corresponding path program 40 times [2021-10-08 18:04:53,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:04:53,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [670818889] [2021-10-08 18:04:53,309 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:04:53,309 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:04:53,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:04:53,310 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:04:53,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-10-08 18:04:54,190 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:04:54,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:04:54,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 18:04:54,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:04:54,589 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:04:54,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:04:56,252 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:04:56,253 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:04:56,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [670818889] [2021-10-08 18:04:56,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [670818889] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:04:56,253 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:04:56,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:04:56,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829109427] [2021-10-08 18:04:56,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:04:56,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:04:56,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:04:56,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:04:56,255 INFO L87 Difference]: Start difference. First operand 228 states and 673 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:03,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:05:03,129 INFO L93 Difference]: Finished difference Result 340 states and 872 transitions. [2021-10-08 18:05:03,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-08 18:05:03,131 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 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 17 [2021-10-08 18:05:03,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:05:03,133 INFO L225 Difference]: With dead ends: 340 [2021-10-08 18:05:03,133 INFO L226 Difference]: Without dead ends: 330 [2021-10-08 18:05:03,133 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 6775.0ms TimeCoverageRelationStatistics Valid=344, Invalid=1636, Unknown=0, NotChecked=0, Total=1980 [2021-10-08 18:05:03,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-10-08 18:05:03,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 228. [2021-10-08 18:05:03,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 2.9647577092511015) internal successors, (673), 227 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:03,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 673 transitions. [2021-10-08 18:05:03,140 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 673 transitions. Word has length 17 [2021-10-08 18:05:03,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:05:03,141 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 673 transitions. [2021-10-08 18:05:03,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:03,141 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 673 transitions. [2021-10-08 18:05:03,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:05:03,142 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:05:03,142 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:05:03,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2021-10-08 18:05:03,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:05:03,356 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:05:03,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:05:03,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1197979468, now seen corresponding path program 41 times [2021-10-08 18:05:03,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:05:03,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [690851793] [2021-10-08 18:05:03,357 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:05:03,358 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:05:03,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:05:03,359 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:05:03,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-10-08 18:05:04,333 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:05:04,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:05:04,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-08 18:05:04,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:05:04,737 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:05:04,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:05:06,402 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:05:06,403 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:05:06,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [690851793] [2021-10-08 18:05:06,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [690851793] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:05:06,403 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:05:06,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:05:06,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917659815] [2021-10-08 18:05:06,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:05:06,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:05:06,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:05:06,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:05:06,405 INFO L87 Difference]: Start difference. First operand 228 states and 673 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:10,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:05:10,476 INFO L93 Difference]: Finished difference Result 340 states and 868 transitions. [2021-10-08 18:05:10,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-08 18:05:10,477 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 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 17 [2021-10-08 18:05:10,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:05:10,480 INFO L225 Difference]: With dead ends: 340 [2021-10-08 18:05:10,480 INFO L226 Difference]: Without dead ends: 318 [2021-10-08 18:05:10,480 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 4153.0ms TimeCoverageRelationStatistics Valid=345, Invalid=915, Unknown=0, NotChecked=0, Total=1260 [2021-10-08 18:05:10,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-10-08 18:05:10,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 214. [2021-10-08 18:05:10,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 3.0187793427230045) internal successors, (643), 213 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:10,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 643 transitions. [2021-10-08 18:05:10,488 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 643 transitions. Word has length 17 [2021-10-08 18:05:10,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:05:10,488 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 643 transitions. [2021-10-08 18:05:10,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:10,488 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 643 transitions. [2021-10-08 18:05:10,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:05:10,489 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:05:10,489 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:05:10,508 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Ended with exit code 0 [2021-10-08 18:05:10,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:05:10,703 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:05:10,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:05:10,704 INFO L82 PathProgramCache]: Analyzing trace with hash 641229420, now seen corresponding path program 42 times [2021-10-08 18:05:10,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:05:10,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1766170889] [2021-10-08 18:05:10,705 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:05:10,705 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:05:10,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:05:10,706 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:05:10,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-10-08 18:05:11,800 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 18:05:11,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:05:11,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 18:05:11,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:05:12,210 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:05:12,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:05:13,567 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:05:13,568 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:05:13,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1766170889] [2021-10-08 18:05:13,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1766170889] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:05:13,568 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:05:13,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:05:13,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200759405] [2021-10-08 18:05:13,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:05:13,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:05:13,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:05:13,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:05:13,570 INFO L87 Difference]: Start difference. First operand 214 states and 643 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:19,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:05:19,415 INFO L93 Difference]: Finished difference Result 534 states and 1317 transitions. [2021-10-08 18:05:19,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-08 18:05:19,416 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 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 17 [2021-10-08 18:05:19,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:05:19,420 INFO L225 Difference]: With dead ends: 534 [2021-10-08 18:05:19,420 INFO L226 Difference]: Without dead ends: 504 [2021-10-08 18:05:19,421 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 699 ImplicationChecksByTransitivity, 5515.5ms TimeCoverageRelationStatistics Valid=704, Invalid=1846, Unknown=0, NotChecked=0, Total=2550 [2021-10-08 18:05:19,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2021-10-08 18:05:19,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 258. [2021-10-08 18:05:19,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 257 states have (on average 3.066147859922179) internal successors, (788), 257 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:19,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 788 transitions. [2021-10-08 18:05:19,429 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 788 transitions. Word has length 17 [2021-10-08 18:05:19,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:05:19,429 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 788 transitions. [2021-10-08 18:05:19,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:19,429 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 788 transitions. [2021-10-08 18:05:19,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:05:19,430 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:05:19,430 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:05:19,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2021-10-08 18:05:19,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:05:19,644 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:05:19,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:05:19,644 INFO L82 PathProgramCache]: Analyzing trace with hash 723337260, now seen corresponding path program 43 times [2021-10-08 18:05:19,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:05:19,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [631170287] [2021-10-08 18:05:19,645 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:05:19,646 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:05:19,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:05:19,647 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:05:19,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-10-08 18:05:20,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:05:20,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 18:05:20,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:05:21,083 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:05:21,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:05:22,279 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:05:22,279 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:05:22,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [631170287] [2021-10-08 18:05:22,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [631170287] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:05:22,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:05:22,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:05:22,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561212445] [2021-10-08 18:05:22,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:05:22,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:05:22,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:05:22,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:05:22,282 INFO L87 Difference]: Start difference. First operand 258 states and 788 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:29,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:05:29,221 INFO L93 Difference]: Finished difference Result 490 states and 1202 transitions. [2021-10-08 18:05:29,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-08 18:05:29,222 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 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 17 [2021-10-08 18:05:29,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:05:29,226 INFO L225 Difference]: With dead ends: 490 [2021-10-08 18:05:29,226 INFO L226 Difference]: Without dead ends: 470 [2021-10-08 18:05:29,226 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 6596.3ms TimeCoverageRelationStatistics Valid=771, Invalid=2091, Unknown=0, NotChecked=0, Total=2862 [2021-10-08 18:05:29,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2021-10-08 18:05:29,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 248. [2021-10-08 18:05:29,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 3.0080971659919027) internal successors, (743), 247 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:29,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 743 transitions. [2021-10-08 18:05:29,233 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 743 transitions. Word has length 17 [2021-10-08 18:05:29,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:05:29,233 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 743 transitions. [2021-10-08 18:05:29,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:29,233 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 743 transitions. [2021-10-08 18:05:29,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:05:29,234 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:05:29,234 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:05:29,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-10-08 18:05:29,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:05:29,435 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:05:29,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:05:29,436 INFO L82 PathProgramCache]: Analyzing trace with hash 122577502, now seen corresponding path program 44 times [2021-10-08 18:05:29,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:05:29,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2072498290] [2021-10-08 18:05:29,437 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:05:29,437 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:05:29,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:05:29,438 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:05:29,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-10-08 18:05:30,580 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:05:30,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:05:30,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 18:05:30,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:05:30,973 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:05:30,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:05:32,296 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:05:32,296 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:05:32,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2072498290] [2021-10-08 18:05:32,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2072498290] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:05:32,297 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:05:32,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:05:32,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111962880] [2021-10-08 18:05:32,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:05:32,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:05:32,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:05:32,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:05:32,299 INFO L87 Difference]: Start difference. First operand 248 states and 743 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:36,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:05:36,615 INFO L93 Difference]: Finished difference Result 426 states and 1065 transitions. [2021-10-08 18:05:36,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-08 18:05:36,616 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 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 17 [2021-10-08 18:05:36,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:05:36,619 INFO L225 Difference]: With dead ends: 426 [2021-10-08 18:05:36,619 INFO L226 Difference]: Without dead ends: 408 [2021-10-08 18:05:36,619 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 4121.1ms TimeCoverageRelationStatistics Valid=454, Invalid=1352, Unknown=0, NotChecked=0, Total=1806 [2021-10-08 18:05:36,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2021-10-08 18:05:36,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 246. [2021-10-08 18:05:36,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 2.987755102040816) internal successors, (732), 245 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:36,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 732 transitions. [2021-10-08 18:05:36,626 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 732 transitions. Word has length 17 [2021-10-08 18:05:36,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:05:36,626 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 732 transitions. [2021-10-08 18:05:36,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:36,626 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 732 transitions. [2021-10-08 18:05:36,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:05:36,627 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:05:36,627 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:05:36,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2021-10-08 18:05:36,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:05:36,832 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:05:36,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:05:36,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1286055124, now seen corresponding path program 45 times [2021-10-08 18:05:36,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:05:36,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [96964064] [2021-10-08 18:05:36,833 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:05:36,834 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:05:36,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:05:36,835 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:05:36,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-10-08 18:05:37,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-08 18:05:37,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:05:37,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 18:05:37,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:05:38,319 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:05:38,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:05:39,888 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:05:39,888 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:05:39,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [96964064] [2021-10-08 18:05:39,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [96964064] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:05:39,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:05:39,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:05:39,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878052036] [2021-10-08 18:05:39,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:05:39,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:05:39,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:05:39,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:05:39,891 INFO L87 Difference]: Start difference. First operand 246 states and 732 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:46,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:05:46,774 INFO L93 Difference]: Finished difference Result 362 states and 955 transitions. [2021-10-08 18:05:46,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-08 18:05:46,775 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 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 17 [2021-10-08 18:05:46,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:05:46,777 INFO L225 Difference]: With dead ends: 362 [2021-10-08 18:05:46,777 INFO L226 Difference]: Without dead ends: 352 [2021-10-08 18:05:46,778 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 6721.4ms TimeCoverageRelationStatistics Valid=410, Invalid=1660, Unknown=0, NotChecked=0, Total=2070 [2021-10-08 18:05:46,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-10-08 18:05:46,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 244. [2021-10-08 18:05:46,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 3.0) internal successors, (729), 243 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:46,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 729 transitions. [2021-10-08 18:05:46,784 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 729 transitions. Word has length 17 [2021-10-08 18:05:46,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:05:46,784 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 729 transitions. [2021-10-08 18:05:46,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:46,784 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 729 transitions. [2021-10-08 18:05:46,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:05:46,785 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:05:46,785 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:05:46,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2021-10-08 18:05:46,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:05:46,992 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:05:46,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:05:46,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1224237228, now seen corresponding path program 46 times [2021-10-08 18:05:46,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:05:46,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [882705103] [2021-10-08 18:05:46,993 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:05:46,994 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:05:46,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:05:46,995 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:05:46,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-10-08 18:05:48,075 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:05:48,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:05:48,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 18:05:48,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:05:48,478 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:05:48,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:05:49,842 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:05:49,842 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:05:49,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [882705103] [2021-10-08 18:05:49,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [882705103] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:05:49,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:05:49,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:05:49,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921174084] [2021-10-08 18:05:49,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:05:49,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:05:49,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:05:49,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:05:49,845 INFO L87 Difference]: Start difference. First operand 244 states and 729 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:53,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:05:53,353 INFO L93 Difference]: Finished difference Result 378 states and 977 transitions. [2021-10-08 18:05:53,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-08 18:05:53,354 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 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 17 [2021-10-08 18:05:53,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:05:53,357 INFO L225 Difference]: With dead ends: 378 [2021-10-08 18:05:53,357 INFO L226 Difference]: Without dead ends: 356 [2021-10-08 18:05:53,357 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 3487.2ms TimeCoverageRelationStatistics Valid=396, Invalid=1086, Unknown=0, NotChecked=0, Total=1482 [2021-10-08 18:05:53,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2021-10-08 18:05:53,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 242. [2021-10-08 18:05:53,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 241 states have (on average 2.987551867219917) internal successors, (720), 241 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:53,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 720 transitions. [2021-10-08 18:05:53,363 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 720 transitions. Word has length 17 [2021-10-08 18:05:53,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:05:53,363 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 720 transitions. [2021-10-08 18:05:53,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:05:53,363 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 720 transitions. [2021-10-08 18:05:53,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:05:53,364 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:05:53,364 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:05:53,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2021-10-08 18:05:53,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:05:53,565 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:05:53,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:05:53,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1329057946, now seen corresponding path program 47 times [2021-10-08 18:05:53,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:05:53,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1668169650] [2021-10-08 18:05:53,566 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:05:53,567 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:05:53,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:05:53,568 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:05:53,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-10-08 18:05:54,674 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 18:05:54,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:05:54,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-08 18:05:54,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:05:55,080 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:05:55,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:05:56,266 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:05:56,267 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:05:56,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1668169650] [2021-10-08 18:05:56,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1668169650] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:05:56,267 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:05:56,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:05:56,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564446294] [2021-10-08 18:05:56,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:05:56,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:05:56,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:05:56,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:05:56,269 INFO L87 Difference]: Start difference. First operand 242 states and 720 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:01,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:06:01,846 INFO L93 Difference]: Finished difference Result 533 states and 1305 transitions. [2021-10-08 18:06:01,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-08 18:06:01,848 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 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 17 [2021-10-08 18:06:01,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:06:01,851 INFO L225 Difference]: With dead ends: 533 [2021-10-08 18:06:01,851 INFO L226 Difference]: Without dead ends: 518 [2021-10-08 18:06:01,852 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 5375.8ms TimeCoverageRelationStatistics Valid=524, Invalid=1926, Unknown=0, NotChecked=0, Total=2450 [2021-10-08 18:06:01,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2021-10-08 18:06:01,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 260. [2021-10-08 18:06:01,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 3.0386100386100385) internal successors, (787), 259 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:01,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 787 transitions. [2021-10-08 18:06:01,859 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 787 transitions. Word has length 17 [2021-10-08 18:06:01,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:06:01,859 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 787 transitions. [2021-10-08 18:06:01,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:01,859 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 787 transitions. [2021-10-08 18:06:01,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:06:01,860 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:06:01,860 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:06:01,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2021-10-08 18:06:02,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:06:02,068 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:06:02,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:06:02,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1411165786, now seen corresponding path program 48 times [2021-10-08 18:06:02,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:06:02,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2035925664] [2021-10-08 18:06:02,070 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:06:02,070 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:06:02,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:06:02,071 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:06:02,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2021-10-08 18:06:03,259 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 18:06:03,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:06:03,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 18:06:03,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:06:03,656 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:06:03,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:06:05,197 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:06:05,198 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:06:05,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2035925664] [2021-10-08 18:06:05,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2035925664] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:06:05,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:06:05,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:06:05,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599049086] [2021-10-08 18:06:05,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:06:05,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:06:05,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:06:05,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:06:05,200 INFO L87 Difference]: Start difference. First operand 260 states and 787 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:13,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:06:13,369 INFO L93 Difference]: Finished difference Result 473 states and 1208 transitions. [2021-10-08 18:06:13,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-08 18:06:13,371 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 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 17 [2021-10-08 18:06:13,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:06:13,373 INFO L225 Difference]: With dead ends: 473 [2021-10-08 18:06:13,373 INFO L226 Difference]: Without dead ends: 458 [2021-10-08 18:06:13,374 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 8051.6ms TimeCoverageRelationStatistics Valid=459, Invalid=1991, Unknown=0, NotChecked=0, Total=2450 [2021-10-08 18:06:13,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-10-08 18:06:13,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 256. [2021-10-08 18:06:13,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 3.0313725490196077) internal successors, (773), 255 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:13,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 773 transitions. [2021-10-08 18:06:13,380 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 773 transitions. Word has length 17 [2021-10-08 18:06:13,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:06:13,380 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 773 transitions. [2021-10-08 18:06:13,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:13,381 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 773 transitions. [2021-10-08 18:06:13,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:06:13,381 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:06:13,381 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:06:13,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2021-10-08 18:06:13,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:06:13,582 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:06:13,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:06:13,583 INFO L82 PathProgramCache]: Analyzing trace with hash 810406028, now seen corresponding path program 49 times [2021-10-08 18:06:13,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:06:13,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [906053732] [2021-10-08 18:06:13,584 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:06:13,584 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:06:13,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:06:13,585 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:06:13,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-10-08 18:06:14,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:06:14,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 18:06:14,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:06:15,112 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:06:15,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:06:16,732 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:06:16,733 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:06:16,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [906053732] [2021-10-08 18:06:16,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [906053732] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:06:16,733 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:06:16,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:06:16,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440591413] [2021-10-08 18:06:16,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:06:16,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:06:16,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:06:16,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:06:16,735 INFO L87 Difference]: Start difference. First operand 256 states and 773 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:23,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:06:23,694 INFO L93 Difference]: Finished difference Result 388 states and 1032 transitions. [2021-10-08 18:06:23,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-08 18:06:23,695 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 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 17 [2021-10-08 18:06:23,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:06:23,697 INFO L225 Difference]: With dead ends: 388 [2021-10-08 18:06:23,697 INFO L226 Difference]: Without dead ends: 378 [2021-10-08 18:06:23,697 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 6882.3ms TimeCoverageRelationStatistics Valid=406, Invalid=1486, Unknown=0, NotChecked=0, Total=1892 [2021-10-08 18:06:23,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-10-08 18:06:23,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 254. [2021-10-08 18:06:23,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 3.027667984189723) internal successors, (766), 253 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:23,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 766 transitions. [2021-10-08 18:06:23,704 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 766 transitions. Word has length 17 [2021-10-08 18:06:23,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:06:23,704 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 766 transitions. [2021-10-08 18:06:23,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:23,704 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 766 transitions. [2021-10-08 18:06:23,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:06:23,705 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:06:23,705 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:06:23,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2021-10-08 18:06:23,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:06:23,919 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:06:23,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:06:23,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1665904674, now seen corresponding path program 50 times [2021-10-08 18:06:23,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:06:23,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [432535176] [2021-10-08 18:06:23,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:06:23,920 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:06:23,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:06:23,922 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:06:23,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2021-10-08 18:06:25,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:06:25,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:06:25,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 18:06:25,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:06:25,532 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:06:25,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:06:27,117 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:06:27,117 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:06:27,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [432535176] [2021-10-08 18:06:27,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [432535176] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:06:27,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:06:27,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:06:27,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378063492] [2021-10-08 18:06:27,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:06:27,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:06:27,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:06:27,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:06:27,119 INFO L87 Difference]: Start difference. First operand 254 states and 766 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:34,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:06:34,294 INFO L93 Difference]: Finished difference Result 434 states and 1109 transitions. [2021-10-08 18:06:34,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-08 18:06:34,295 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 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 17 [2021-10-08 18:06:34,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:06:34,297 INFO L225 Difference]: With dead ends: 434 [2021-10-08 18:06:34,297 INFO L226 Difference]: Without dead ends: 414 [2021-10-08 18:06:34,297 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 7203.1ms TimeCoverageRelationStatistics Valid=465, Invalid=1887, Unknown=0, NotChecked=0, Total=2352 [2021-10-08 18:06:34,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2021-10-08 18:06:34,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 266. [2021-10-08 18:06:34,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 2.9584905660377356) internal successors, (784), 265 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:34,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 784 transitions. [2021-10-08 18:06:34,304 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 784 transitions. Word has length 17 [2021-10-08 18:06:34,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:06:34,304 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 784 transitions. [2021-10-08 18:06:34,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:34,305 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 784 transitions. [2021-10-08 18:06:34,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:06:34,305 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:06:34,306 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:06:34,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2021-10-08 18:06:34,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:06:34,507 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:06:34,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:06:34,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1768016794, now seen corresponding path program 51 times [2021-10-08 18:06:34,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:06:34,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1746422018] [2021-10-08 18:06:34,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:06:34,509 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:06:34,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:06:34,510 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:06:34,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2021-10-08 18:06:35,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 18:06:35,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:06:35,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 18:06:35,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:06:36,176 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:06:36,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:06:37,486 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:06:37,487 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:06:37,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1746422018] [2021-10-08 18:06:37,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1746422018] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:06:37,487 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:06:37,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:06:37,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950345316] [2021-10-08 18:06:37,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:06:37,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:06:37,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:06:37,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:06:37,489 INFO L87 Difference]: Start difference. First operand 266 states and 784 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:40,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:06:40,905 INFO L93 Difference]: Finished difference Result 406 states and 1068 transitions. [2021-10-08 18:06:40,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-08 18:06:40,907 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 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 17 [2021-10-08 18:06:40,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:06:40,910 INFO L225 Difference]: With dead ends: 406 [2021-10-08 18:06:40,910 INFO L226 Difference]: Without dead ends: 378 [2021-10-08 18:06:40,911 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 3392.2ms TimeCoverageRelationStatistics Valid=392, Invalid=1248, Unknown=0, NotChecked=0, Total=1640 [2021-10-08 18:06:40,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-10-08 18:06:40,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 248. [2021-10-08 18:06:40,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 3.0364372469635628) internal successors, (750), 247 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:40,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 750 transitions. [2021-10-08 18:06:40,919 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 750 transitions. Word has length 17 [2021-10-08 18:06:40,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:06:40,919 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 750 transitions. [2021-10-08 18:06:40,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:40,920 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 750 transitions. [2021-10-08 18:06:40,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:06:40,920 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:06:40,921 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:06:40,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2021-10-08 18:06:41,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:06:41,147 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:06:41,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:06:41,148 INFO L82 PathProgramCache]: Analyzing trace with hash -316298114, now seen corresponding path program 52 times [2021-10-08 18:06:41,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:06:41,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1145857410] [2021-10-08 18:06:41,149 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:06:41,149 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:06:41,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:06:41,150 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:06:41,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2021-10-08 18:06:42,383 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:06:42,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:06:42,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 18:06:42,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:06:42,852 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:06:42,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:06:44,785 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:06:44,786 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:06:44,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1145857410] [2021-10-08 18:06:44,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1145857410] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:06:44,786 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:06:44,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 18:06:44,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078722867] [2021-10-08 18:06:44,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 18:06:44,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:06:44,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 18:06:44,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2021-10-08 18:06:44,788 INFO L87 Difference]: Start difference. First operand 248 states and 750 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:56,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:06:56,655 INFO L93 Difference]: Finished difference Result 564 states and 1447 transitions. [2021-10-08 18:06:56,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-08 18:06:56,657 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 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 18 [2021-10-08 18:06:56,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:06:56,660 INFO L225 Difference]: With dead ends: 564 [2021-10-08 18:06:56,660 INFO L226 Difference]: Without dead ends: 544 [2021-10-08 18:06:56,661 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 11270.2ms TimeCoverageRelationStatistics Valid=691, Invalid=2065, Unknown=0, NotChecked=0, Total=2756 [2021-10-08 18:06:56,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2021-10-08 18:06:56,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 316. [2021-10-08 18:06:56,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 315 states have (on average 3.231746031746032) internal successors, (1018), 315 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:56,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 1018 transitions. [2021-10-08 18:06:56,669 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 1018 transitions. Word has length 18 [2021-10-08 18:06:56,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:06:56,669 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 1018 transitions. [2021-10-08 18:06:56,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:06:56,669 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 1018 transitions. [2021-10-08 18:06:56,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:06:56,670 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:06:56,670 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:06:56,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2021-10-08 18:06:56,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:06:56,874 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:06:56,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:06:56,874 INFO L82 PathProgramCache]: Analyzing trace with hash -234190274, now seen corresponding path program 53 times [2021-10-08 18:06:56,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:06:56,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1232710737] [2021-10-08 18:06:56,875 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:06:56,875 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:06:56,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:06:56,877 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:06:56,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2021-10-08 18:06:58,122 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-08 18:06:58,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:06:58,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 18:06:58,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:06:58,579 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:06:58,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:07:00,472 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:07:00,472 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:07:00,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1232710737] [2021-10-08 18:07:00,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1232710737] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:07:00,473 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:07:00,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 18:07:00,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185796187] [2021-10-08 18:07:00,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 18:07:00,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:07:00,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 18:07:00,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2021-10-08 18:07:00,475 INFO L87 Difference]: Start difference. First operand 316 states and 1018 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:09,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:07:09,830 INFO L93 Difference]: Finished difference Result 525 states and 1381 transitions. [2021-10-08 18:07:09,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-08 18:07:09,831 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 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 18 [2021-10-08 18:07:09,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:07:09,835 INFO L225 Difference]: With dead ends: 525 [2021-10-08 18:07:09,836 INFO L226 Difference]: Without dead ends: 510 [2021-10-08 18:07:09,836 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 8925.2ms TimeCoverageRelationStatistics Valid=601, Invalid=2051, Unknown=0, NotChecked=0, Total=2652 [2021-10-08 18:07:09,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2021-10-08 18:07:09,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 318. [2021-10-08 18:07:09,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 317 states have (on average 3.2397476340694005) internal successors, (1027), 317 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:09,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 1027 transitions. [2021-10-08 18:07:09,847 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 1027 transitions. Word has length 18 [2021-10-08 18:07:09,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:07:09,848 INFO L470 AbstractCegarLoop]: Abstraction has 318 states and 1027 transitions. [2021-10-08 18:07:09,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:09,848 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 1027 transitions. [2021-10-08 18:07:09,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:07:09,849 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:07:09,849 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:07:09,870 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Ended with exit code 0 [2021-10-08 18:07:10,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:07:10,065 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:07:10,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:07:10,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1373628838, now seen corresponding path program 54 times [2021-10-08 18:07:10,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:07:10,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [967254369] [2021-10-08 18:07:10,066 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:07:10,067 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:07:10,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:07:10,069 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:07:10,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2021-10-08 18:07:11,423 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 18:07:11,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:07:11,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-08 18:07:11,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:07:11,870 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:07:11,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:07:13,877 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:07:13,878 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:07:13,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [967254369] [2021-10-08 18:07:13,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [967254369] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:07:13,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:07:13,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 18:07:13,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687840983] [2021-10-08 18:07:13,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 18:07:13,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:07:13,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 18:07:13,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2021-10-08 18:07:13,880 INFO L87 Difference]: Start difference. First operand 318 states and 1027 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:24,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:07:24,107 INFO L93 Difference]: Finished difference Result 550 states and 1469 transitions. [2021-10-08 18:07:24,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-08 18:07:24,108 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 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 18 [2021-10-08 18:07:24,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:07:24,113 INFO L225 Difference]: With dead ends: 550 [2021-10-08 18:07:24,113 INFO L226 Difference]: Without dead ends: 530 [2021-10-08 18:07:24,114 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 9984.3ms TimeCoverageRelationStatistics Valid=466, Invalid=1604, Unknown=0, NotChecked=0, Total=2070 [2021-10-08 18:07:24,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2021-10-08 18:07:24,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 338. [2021-10-08 18:07:24,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 337 states have (on average 3.28486646884273) internal successors, (1107), 337 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:24,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 1107 transitions. [2021-10-08 18:07:24,129 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 1107 transitions. Word has length 18 [2021-10-08 18:07:24,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:07:24,130 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 1107 transitions. [2021-10-08 18:07:24,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:24,130 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 1107 transitions. [2021-10-08 18:07:24,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:07:24,131 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:07:24,132 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:07:24,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2021-10-08 18:07:24,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:07:24,334 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:07:24,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:07:24,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1291520998, now seen corresponding path program 55 times [2021-10-08 18:07:24,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:07:24,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1135339008] [2021-10-08 18:07:24,336 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:07:24,336 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:07:24,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:07:24,337 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:07:24,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2021-10-08 18:07:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:07:25,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 18:07:25,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:07:26,204 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:07:26,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:07:28,432 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:07:28,432 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:07:28,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1135339008] [2021-10-08 18:07:28,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1135339008] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:07:28,433 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:07:28,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 18:07:28,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72661804] [2021-10-08 18:07:28,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 18:07:28,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:07:28,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 18:07:28,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2021-10-08 18:07:28,435 INFO L87 Difference]: Start difference. First operand 338 states and 1107 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:39,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:07:39,046 INFO L93 Difference]: Finished difference Result 530 states and 1431 transitions. [2021-10-08 18:07:39,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-08 18:07:39,052 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 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 18 [2021-10-08 18:07:39,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:07:39,057 INFO L225 Difference]: With dead ends: 530 [2021-10-08 18:07:39,057 INFO L226 Difference]: Without dead ends: 510 [2021-10-08 18:07:39,058 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 10485.1ms TimeCoverageRelationStatistics Valid=487, Invalid=1865, Unknown=0, NotChecked=0, Total=2352 [2021-10-08 18:07:39,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2021-10-08 18:07:39,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 332. [2021-10-08 18:07:39,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 3.2628398791540785) internal successors, (1080), 331 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:39,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 1080 transitions. [2021-10-08 18:07:39,069 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 1080 transitions. Word has length 18 [2021-10-08 18:07:39,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:07:39,069 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 1080 transitions. [2021-10-08 18:07:39,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:39,069 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 1080 transitions. [2021-10-08 18:07:39,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:07:39,070 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:07:39,070 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:07:39,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Forceful destruction successful, exit code 0 [2021-10-08 18:07:39,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:07:39,271 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:07:39,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:07:39,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1501757694, now seen corresponding path program 56 times [2021-10-08 18:07:39,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:07:39,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1584386574] [2021-10-08 18:07:39,273 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:07:39,273 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:07:39,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:07:39,277 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:07:39,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2021-10-08 18:07:40,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:07:40,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:07:40,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 18:07:40,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:07:41,138 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:07:41,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:07:43,438 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:07:43,438 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:07:43,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1584386574] [2021-10-08 18:07:43,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1584386574] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:07:43,439 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:07:43,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 18:07:43,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808412031] [2021-10-08 18:07:43,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 18:07:43,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:07:43,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 18:07:43,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2021-10-08 18:07:43,441 INFO L87 Difference]: Start difference. First operand 332 states and 1080 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:53,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:07:53,309 INFO L93 Difference]: Finished difference Result 512 states and 1420 transitions. [2021-10-08 18:07:53,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-08 18:07:53,310 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 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 18 [2021-10-08 18:07:53,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:07:53,312 INFO L225 Difference]: With dead ends: 512 [2021-10-08 18:07:53,313 INFO L226 Difference]: Without dead ends: 502 [2021-10-08 18:07:53,313 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 9766.7ms TimeCoverageRelationStatistics Valid=446, Invalid=1534, Unknown=0, NotChecked=0, Total=1980 [2021-10-08 18:07:53,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2021-10-08 18:07:53,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 338. [2021-10-08 18:07:53,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 337 states have (on average 3.2729970326409497) internal successors, (1103), 337 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:53,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 1103 transitions. [2021-10-08 18:07:53,330 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 1103 transitions. Word has length 18 [2021-10-08 18:07:53,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:07:53,330 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 1103 transitions. [2021-10-08 18:07:53,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:07:53,330 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 1103 transitions. [2021-10-08 18:07:53,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:07:53,332 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:07:53,332 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:07:53,350 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Ended with exit code 0 [2021-10-08 18:07:53,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:07:53,541 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:07:53,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:07:53,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1583865534, now seen corresponding path program 57 times [2021-10-08 18:07:53,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:07:53,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [792914257] [2021-10-08 18:07:53,543 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:07:53,544 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:07:53,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:07:53,545 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:07:53,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2021-10-08 18:07:54,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 18:07:54,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:07:54,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-08 18:07:54,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:07:55,438 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:07:55,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:07:57,347 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:07:57,347 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:07:57,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [792914257] [2021-10-08 18:07:57,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [792914257] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:07:57,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:07:57,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 18:07:57,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119921230] [2021-10-08 18:07:57,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 18:07:57,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:07:57,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 18:07:57,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2021-10-08 18:07:57,350 INFO L87 Difference]: Start difference. First operand 338 states and 1103 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:08:05,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:08:05,388 INFO L93 Difference]: Finished difference Result 514 states and 1425 transitions. [2021-10-08 18:08:05,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-08 18:08:05,389 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 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 18 [2021-10-08 18:08:05,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:08:05,392 INFO L225 Difference]: With dead ends: 514 [2021-10-08 18:08:05,392 INFO L226 Difference]: Without dead ends: 504 [2021-10-08 18:08:05,393 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 7877.1ms TimeCoverageRelationStatistics Valid=453, Invalid=1899, Unknown=0, NotChecked=0, Total=2352 [2021-10-08 18:08:05,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2021-10-08 18:08:05,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 336. [2021-10-08 18:08:05,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 335 states have (on average 3.265671641791045) internal successors, (1094), 335 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:08:05,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 1094 transitions. [2021-10-08 18:08:05,404 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 1094 transitions. Word has length 18 [2021-10-08 18:08:05,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:08:05,405 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 1094 transitions. [2021-10-08 18:08:05,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:08:05,405 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 1094 transitions. [2021-10-08 18:08:05,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:08:05,406 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:08:05,406 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:08:05,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Forceful destruction successful, exit code 0 [2021-10-08 18:08:05,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:08:05,621 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:08:05,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:08:05,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1317417434, now seen corresponding path program 58 times [2021-10-08 18:08:05,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:08:05,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1530952516] [2021-10-08 18:08:05,622 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:08:05,623 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:08:05,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:08:05,624 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:08:05,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2021-10-08 18:08:07,021 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:08:07,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:08:07,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 18:08:07,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:08:07,496 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:08:07,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:08:09,657 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:08:09,658 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:08:09,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1530952516] [2021-10-08 18:08:09,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1530952516] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:08:09,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:08:09,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 18:08:09,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340314730] [2021-10-08 18:08:09,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 18:08:09,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:08:09,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 18:08:09,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2021-10-08 18:08:09,660 INFO L87 Difference]: Start difference. First operand 336 states and 1094 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:08:18,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:08:18,545 INFO L93 Difference]: Finished difference Result 502 states and 1412 transitions. [2021-10-08 18:08:18,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-08 18:08:18,547 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 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 18 [2021-10-08 18:08:18,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:08:18,548 INFO L225 Difference]: With dead ends: 502 [2021-10-08 18:08:18,548 INFO L226 Difference]: Without dead ends: 492 [2021-10-08 18:08:18,549 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 9100.7ms TimeCoverageRelationStatistics Valid=354, Invalid=1368, Unknown=0, NotChecked=0, Total=1722 [2021-10-08 18:08:18,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2021-10-08 18:08:18,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 340. [2021-10-08 18:08:18,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 339 states have (on average 3.2684365781710913) internal successors, (1108), 339 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:08:18,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 1108 transitions. [2021-10-08 18:08:18,557 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 1108 transitions. Word has length 18 [2021-10-08 18:08:18,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:08:18,557 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 1108 transitions. [2021-10-08 18:08:18,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:08:18,557 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 1108 transitions. [2021-10-08 18:08:18,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:08:18,558 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:08:18,558 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:08:18,574 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Ended with exit code 0 [2021-10-08 18:08:18,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:08:18,761 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:08:18,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:08:18,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1399525274, now seen corresponding path program 59 times [2021-10-08 18:08:18,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:08:18,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1126289085] [2021-10-08 18:08:18,763 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:08:18,763 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:08:18,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:08:18,764 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:08:18,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2021-10-08 18:08:20,097 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 18:08:20,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:08:20,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 18:08:20,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:08:20,578 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:08:20,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:08:22,733 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:08:22,734 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:08:22,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1126289085] [2021-10-08 18:08:22,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1126289085] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:08:22,734 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:08:22,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 18:08:22,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975337873] [2021-10-08 18:08:22,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 18:08:22,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:08:22,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 18:08:22,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2021-10-08 18:08:22,736 INFO L87 Difference]: Start difference. First operand 340 states and 1108 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:08:29,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:08:29,904 INFO L93 Difference]: Finished difference Result 480 states and 1371 transitions. [2021-10-08 18:08:29,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-08 18:08:29,904 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 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 18 [2021-10-08 18:08:29,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:08:29,905 INFO L225 Difference]: With dead ends: 480 [2021-10-08 18:08:29,905 INFO L226 Difference]: Without dead ends: 470 [2021-10-08 18:08:29,906 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 7405.0ms TimeCoverageRelationStatistics Valid=358, Invalid=1622, Unknown=0, NotChecked=0, Total=1980 [2021-10-08 18:08:29,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2021-10-08 18:08:29,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 338. [2021-10-08 18:08:29,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 337 states have (on average 3.2611275964391693) internal successors, (1099), 337 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:08:29,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 1099 transitions. [2021-10-08 18:08:29,918 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 1099 transitions. Word has length 18 [2021-10-08 18:08:29,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:08:29,919 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 1099 transitions. [2021-10-08 18:08:29,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:08:29,919 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 1099 transitions. [2021-10-08 18:08:29,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:08:29,920 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:08:29,920 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:08:29,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Forceful destruction successful, exit code 0 [2021-10-08 18:08:30,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:08:30,121 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:08:30,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:08:30,122 INFO L82 PathProgramCache]: Analyzing trace with hash 798765516, now seen corresponding path program 60 times [2021-10-08 18:08:30,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:08:30,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1944791243] [2021-10-08 18:08:30,123 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:08:30,123 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:08:30,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:08:30,124 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:08:30,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2021-10-08 18:08:31,674 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 18:08:31,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:08:31,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 18:08:31,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:08:32,136 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:08:32,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:08:34,399 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:08:34,400 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:08:34,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1944791243] [2021-10-08 18:08:34,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1944791243] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:08:34,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:08:34,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 18:08:34,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449764710] [2021-10-08 18:08:34,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 18:08:34,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:08:34,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 18:08:34,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2021-10-08 18:08:34,405 INFO L87 Difference]: Start difference. First operand 338 states and 1099 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:08:41,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:08:41,481 INFO L93 Difference]: Finished difference Result 426 states and 1259 transitions. [2021-10-08 18:08:41,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-08 18:08:41,483 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 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 18 [2021-10-08 18:08:41,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:08:41,484 INFO L225 Difference]: With dead ends: 426 [2021-10-08 18:08:41,484 INFO L226 Difference]: Without dead ends: 416 [2021-10-08 18:08:41,484 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 7504.9ms TimeCoverageRelationStatistics Valid=278, Invalid=1054, Unknown=0, NotChecked=0, Total=1332 [2021-10-08 18:08:41,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-10-08 18:08:41,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 336. [2021-10-08 18:08:41,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 335 states have (on average 3.2597014925373133) internal successors, (1092), 335 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:08:41,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 1092 transitions. [2021-10-08 18:08:41,491 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 1092 transitions. Word has length 18 [2021-10-08 18:08:41,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:08:41,491 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 1092 transitions. [2021-10-08 18:08:41,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:08:41,491 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 1092 transitions. [2021-10-08 18:08:41,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:08:41,492 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:08:41,492 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:08:41,507 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Ended with exit code 0 [2021-10-08 18:08:41,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:08:41,693 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:08:41,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:08:41,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1928088286, now seen corresponding path program 61 times [2021-10-08 18:08:41,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:08:41,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [77791534] [2021-10-08 18:08:41,695 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:08:41,695 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:08:41,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:08:41,697 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:08:41,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2021-10-08 18:08:43,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:08:43,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 18:08:43,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:08:43,565 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:08:43,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:08:45,573 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:08:45,574 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:08:45,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [77791534] [2021-10-08 18:08:45,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [77791534] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:08:45,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:08:45,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 18:08:45,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865198686] [2021-10-08 18:08:45,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 18:08:45,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:08:45,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 18:08:45,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2021-10-08 18:08:45,575 INFO L87 Difference]: Start difference. First operand 336 states and 1092 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:08:57,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:08:57,568 INFO L93 Difference]: Finished difference Result 610 states and 1650 transitions. [2021-10-08 18:08:57,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-08 18:08:57,569 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 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 18 [2021-10-08 18:08:57,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:08:57,571 INFO L225 Difference]: With dead ends: 610 [2021-10-08 18:08:57,571 INFO L226 Difference]: Without dead ends: 590 [2021-10-08 18:08:57,571 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 11237.0ms TimeCoverageRelationStatistics Valid=655, Invalid=1997, Unknown=0, NotChecked=0, Total=2652 [2021-10-08 18:08:57,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-10-08 18:08:57,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 358. [2021-10-08 18:08:57,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 3.330532212885154) internal successors, (1189), 357 states have internal predecessors, (1189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:08:57,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 1189 transitions. [2021-10-08 18:08:57,579 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 1189 transitions. Word has length 18 [2021-10-08 18:08:57,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:08:57,580 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 1189 transitions. [2021-10-08 18:08:57,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:08:57,580 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 1189 transitions. [2021-10-08 18:08:57,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:08:57,581 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:08:57,581 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:08:57,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Forceful destruction successful, exit code 0 [2021-10-08 18:08:57,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:08:57,782 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:08:57,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:08:57,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1845980446, now seen corresponding path program 62 times [2021-10-08 18:08:57,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:08:57,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2104596484] [2021-10-08 18:08:57,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:08:57,785 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:08:57,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:08:57,786 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:08:57,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2021-10-08 18:08:59,309 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:08:59,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:08:59,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 18:08:59,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:08:59,769 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:08:59,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:09:01,730 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:09:01,731 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:09:01,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2104596484] [2021-10-08 18:09:01,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2104596484] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:09:01,731 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:09:01,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 18:09:01,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579584290] [2021-10-08 18:09:01,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 18:09:01,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:09:01,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 18:09:01,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2021-10-08 18:09:01,733 INFO L87 Difference]: Start difference. First operand 358 states and 1189 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:09:12,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:09:12,605 INFO L93 Difference]: Finished difference Result 573 states and 1567 transitions. [2021-10-08 18:09:12,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-08 18:09:12,606 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 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 18 [2021-10-08 18:09:12,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:09:12,608 INFO L225 Difference]: With dead ends: 573 [2021-10-08 18:09:12,608 INFO L226 Difference]: Without dead ends: 558 [2021-10-08 18:09:12,608 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 10084.8ms TimeCoverageRelationStatistics Valid=598, Invalid=2158, Unknown=0, NotChecked=0, Total=2756 [2021-10-08 18:09:12,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-10-08 18:09:12,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 318. [2021-10-08 18:09:12,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 317 states have (on average 3.2523659305993693) internal successors, (1031), 317 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:09:12,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 1031 transitions. [2021-10-08 18:09:12,615 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 1031 transitions. Word has length 18 [2021-10-08 18:09:12,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:09:12,616 INFO L470 AbstractCegarLoop]: Abstraction has 318 states and 1031 transitions. [2021-10-08 18:09:12,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:09:12,616 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 1031 transitions. [2021-10-08 18:09:12,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:09:12,617 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:09:12,617 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:09:12,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Forceful destruction successful, exit code 0 [2021-10-08 18:09:12,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:09:12,818 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:09:12,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:09:12,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1309548286, now seen corresponding path program 63 times [2021-10-08 18:09:12,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:09:12,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1931574398] [2021-10-08 18:09:12,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:09:12,820 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:09:12,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:09:12,821 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:09:12,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2021-10-08 18:09:14,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 18:09:14,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:09:14,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-08 18:09:14,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:09:14,864 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:09:14,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:09:16,658 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:09:16,659 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:09:16,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1931574398] [2021-10-08 18:09:16,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1931574398] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:09:16,659 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:09:16,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 18:09:16,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179369601] [2021-10-08 18:09:16,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 18:09:16,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:09:16,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 18:09:16,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2021-10-08 18:09:16,660 INFO L87 Difference]: Start difference. First operand 318 states and 1031 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:09:27,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:09:27,375 INFO L93 Difference]: Finished difference Result 570 states and 1512 transitions. [2021-10-08 18:09:27,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-08 18:09:27,377 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 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 18 [2021-10-08 18:09:27,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:09:27,378 INFO L225 Difference]: With dead ends: 570 [2021-10-08 18:09:27,378 INFO L226 Difference]: Without dead ends: 550 [2021-10-08 18:09:27,379 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 571 ImplicationChecksByTransitivity, 9799.9ms TimeCoverageRelationStatistics Valid=611, Invalid=2251, Unknown=0, NotChecked=0, Total=2862 [2021-10-08 18:09:27,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-10-08 18:09:27,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 326. [2021-10-08 18:09:27,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 325 states have (on average 3.2984615384615386) internal successors, (1072), 325 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:09:27,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 1072 transitions. [2021-10-08 18:09:27,392 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 1072 transitions. Word has length 18 [2021-10-08 18:09:27,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:09:27,392 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 1072 transitions. [2021-10-08 18:09:27,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:09:27,392 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 1072 transitions. [2021-10-08 18:09:27,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:09:27,393 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:09:27,393 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:09:27,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Forceful destruction successful, exit code 0 [2021-10-08 18:09:27,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:09:27,594 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:09:27,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:09:27,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1391656126, now seen corresponding path program 64 times [2021-10-08 18:09:27,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:09:27,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [748870493] [2021-10-08 18:09:27,596 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:09:27,596 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:09:27,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:09:27,598 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:09:27,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2021-10-08 18:09:29,170 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:09:29,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:09:29,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 18:09:29,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:09:29,627 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:09:29,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:09:31,775 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:09:31,776 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:09:31,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [748870493] [2021-10-08 18:09:31,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [748870493] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:09:31,776 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:09:31,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 18:09:31,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871735537] [2021-10-08 18:09:31,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 18:09:31,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:09:31,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 18:09:31,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2021-10-08 18:09:31,778 INFO L87 Difference]: Start difference. First operand 326 states and 1072 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:09:43,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:09:43,713 INFO L93 Difference]: Finished difference Result 538 states and 1456 transitions. [2021-10-08 18:09:43,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-08 18:09:43,715 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 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 18 [2021-10-08 18:09:43,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:09:43,716 INFO L225 Difference]: With dead ends: 538 [2021-10-08 18:09:43,716 INFO L226 Difference]: Without dead ends: 518 [2021-10-08 18:09:43,717 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 11403.9ms TimeCoverageRelationStatistics Valid=511, Invalid=2039, Unknown=0, NotChecked=0, Total=2550 [2021-10-08 18:09:43,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2021-10-08 18:09:43,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 304. [2021-10-08 18:09:43,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 3.237623762376238) internal successors, (981), 303 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:09:43,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 981 transitions. [2021-10-08 18:09:43,725 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 981 transitions. Word has length 18 [2021-10-08 18:09:43,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:09:43,725 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 981 transitions. [2021-10-08 18:09:43,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:09:43,725 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 981 transitions. [2021-10-08 18:09:43,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:09:43,726 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:09:43,726 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:09:43,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Forceful destruction successful, exit code 0 [2021-10-08 18:09:43,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:09:43,927 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:09:43,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:09:43,928 INFO L82 PathProgramCache]: Analyzing trace with hash -110032478, now seen corresponding path program 65 times [2021-10-08 18:09:43,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:09:43,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1597016793] [2021-10-08 18:09:43,928 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:09:43,929 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:09:43,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:09:43,930 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:09:43,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2021-10-08 18:09:45,536 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 18:09:45,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:09:45,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 18:09:45,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:09:46,011 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:09:46,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:09:48,193 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:09:48,194 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:09:48,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1597016793] [2021-10-08 18:09:48,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1597016793] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:09:48,194 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:09:48,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 18:09:48,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569421117] [2021-10-08 18:09:48,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 18:09:48,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:09:48,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 18:09:48,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2021-10-08 18:09:48,196 INFO L87 Difference]: Start difference. First operand 304 states and 981 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:09:57,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:09:57,948 INFO L93 Difference]: Finished difference Result 498 states and 1377 transitions. [2021-10-08 18:09:57,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-08 18:09:57,949 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 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 18 [2021-10-08 18:09:57,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:09:57,951 INFO L225 Difference]: With dead ends: 498 [2021-10-08 18:09:57,951 INFO L226 Difference]: Without dead ends: 488 [2021-10-08 18:09:57,951 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 9389.0ms TimeCoverageRelationStatistics Valid=460, Invalid=1610, Unknown=0, NotChecked=0, Total=2070 [2021-10-08 18:09:57,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-10-08 18:09:57,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 314. [2021-10-08 18:09:57,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 313 states have (on average 3.2651757188498403) internal successors, (1022), 313 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:09:57,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 1022 transitions. [2021-10-08 18:09:57,960 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 1022 transitions. Word has length 18 [2021-10-08 18:09:57,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:09:57,960 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 1022 transitions. [2021-10-08 18:09:57,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:09:57,960 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 1022 transitions. [2021-10-08 18:09:57,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:09:57,961 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:09:57,961 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:09:57,977 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Ended with exit code 0 [2021-10-08 18:09:58,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:09:58,163 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:09:58,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:09:58,163 INFO L82 PathProgramCache]: Analyzing trace with hash -27924638, now seen corresponding path program 66 times [2021-10-08 18:09:58,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:09:58,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1005352663] [2021-10-08 18:09:58,164 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:09:58,165 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:09:58,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:09:58,166 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:09:58,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2021-10-08 18:09:59,910 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 18:09:59,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:09:59,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 18:09:59,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:10:00,371 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:10:00,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:10:02,458 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:10:02,458 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:10:02,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1005352663] [2021-10-08 18:10:02,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1005352663] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:10:02,459 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:10:02,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 18:10:02,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970175071] [2021-10-08 18:10:02,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 18:10:02,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:10:02,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 18:10:02,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2021-10-08 18:10:02,460 INFO L87 Difference]: Start difference. First operand 314 states and 1022 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:10:11,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:10:11,834 INFO L93 Difference]: Finished difference Result 490 states and 1361 transitions. [2021-10-08 18:10:11,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-08 18:10:11,836 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 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 18 [2021-10-08 18:10:11,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:10:11,837 INFO L225 Difference]: With dead ends: 490 [2021-10-08 18:10:11,837 INFO L226 Difference]: Without dead ends: 480 [2021-10-08 18:10:11,838 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 9109.1ms TimeCoverageRelationStatistics Valid=445, Invalid=1811, Unknown=0, NotChecked=0, Total=2256 [2021-10-08 18:10:11,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-10-08 18:10:11,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 306. [2021-10-08 18:10:11,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 305 states have (on average 3.232786885245902) internal successors, (986), 305 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:10:11,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 986 transitions. [2021-10-08 18:10:11,844 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 986 transitions. Word has length 18 [2021-10-08 18:10:11,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:10:11,845 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 986 transitions. [2021-10-08 18:10:11,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:10:11,845 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 986 transitions. [2021-10-08 18:10:11,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:10:11,846 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:10:11,846 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:10:11,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Forceful destruction successful, exit code 0 [2021-10-08 18:10:12,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:10:12,047 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:10:12,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:10:12,047 INFO L82 PathProgramCache]: Analyzing trace with hash -294372738, now seen corresponding path program 67 times [2021-10-08 18:10:12,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:10:12,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377525263] [2021-10-08 18:10:12,048 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:10:12,049 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:10:12,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:10:12,050 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:10:12,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2021-10-08 18:10:13,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:10:13,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 18:10:13,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:10:14,195 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:10:14,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:10:16,416 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:10:16,417 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:10:16,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1377525263] [2021-10-08 18:10:16,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1377525263] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:10:16,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:10:16,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 18:10:16,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316099989] [2021-10-08 18:10:16,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 18:10:16,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:10:16,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 18:10:16,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2021-10-08 18:10:16,419 INFO L87 Difference]: Start difference. First operand 306 states and 986 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:10:25,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:10:25,837 INFO L93 Difference]: Finished difference Result 480 states and 1336 transitions. [2021-10-08 18:10:25,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-08 18:10:25,838 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 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 18 [2021-10-08 18:10:25,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:10:25,840 INFO L225 Difference]: With dead ends: 480 [2021-10-08 18:10:25,840 INFO L226 Difference]: Without dead ends: 470 [2021-10-08 18:10:25,841 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 9317.3ms TimeCoverageRelationStatistics Valid=394, Invalid=1498, Unknown=0, NotChecked=0, Total=1892 [2021-10-08 18:10:25,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2021-10-08 18:10:25,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 312. [2021-10-08 18:10:25,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 311 states have (on average 3.2443729903536975) internal successors, (1009), 311 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:10:25,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 1009 transitions. [2021-10-08 18:10:25,851 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 1009 transitions. Word has length 18 [2021-10-08 18:10:25,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:10:25,851 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 1009 transitions. [2021-10-08 18:10:25,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:10:25,852 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 1009 transitions. [2021-10-08 18:10:25,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:10:25,853 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:10:25,853 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:10:25,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Forceful destruction successful, exit code 0 [2021-10-08 18:10:26,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:10:26,066 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:10:26,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:10:26,067 INFO L82 PathProgramCache]: Analyzing trace with hash -212264898, now seen corresponding path program 68 times [2021-10-08 18:10:26,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:10:26,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [710036509] [2021-10-08 18:10:26,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:10:26,068 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:10:26,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:10:26,069 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:10:26,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2021-10-08 18:10:28,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:10:28,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:10:28,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 18:10:28,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:10:28,646 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:10:28,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:10:30,847 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:10:30,848 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:10:30,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [710036509] [2021-10-08 18:10:30,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [710036509] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:10:30,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:10:30,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 18:10:30,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814943908] [2021-10-08 18:10:30,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 18:10:30,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:10:30,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 18:10:30,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2021-10-08 18:10:30,850 INFO L87 Difference]: Start difference. First operand 312 states and 1009 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:10:38,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:10:38,851 INFO L93 Difference]: Finished difference Result 460 states and 1300 transitions. [2021-10-08 18:10:38,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-08 18:10:38,852 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 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 18 [2021-10-08 18:10:38,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:10:38,853 INFO L225 Difference]: With dead ends: 460 [2021-10-08 18:10:38,853 INFO L226 Difference]: Without dead ends: 450 [2021-10-08 18:10:38,853 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 7963.6ms TimeCoverageRelationStatistics Valid=362, Invalid=1618, Unknown=0, NotChecked=0, Total=1980 [2021-10-08 18:10:38,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-10-08 18:10:38,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 308. [2021-10-08 18:10:38,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 3.228013029315961) internal successors, (991), 307 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:10:38,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 991 transitions. [2021-10-08 18:10:38,860 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 991 transitions. Word has length 18 [2021-10-08 18:10:38,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:10:38,860 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 991 transitions. [2021-10-08 18:10:38,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:10:38,860 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 991 transitions. [2021-10-08 18:10:38,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:10:38,861 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:10:38,861 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:10:38,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Forceful destruction successful, exit code 0 [2021-10-08 18:10:39,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:10:39,062 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:10:39,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:10:39,063 INFO L82 PathProgramCache]: Analyzing trace with hash -813024656, now seen corresponding path program 69 times [2021-10-08 18:10:39,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:10:39,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2068025616] [2021-10-08 18:10:39,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:10:39,064 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:10:39,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:10:39,065 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:10:39,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2021-10-08 18:10:40,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 18:10:40,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:10:40,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-08 18:10:40,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:10:41,367 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:10:41,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:10:43,512 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:10:43,512 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:10:43,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2068025616] [2021-10-08 18:10:43,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2068025616] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:10:43,513 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:10:43,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 18:10:43,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654733305] [2021-10-08 18:10:43,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 18:10:43,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:10:43,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 18:10:43,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2021-10-08 18:10:43,515 INFO L87 Difference]: Start difference. First operand 308 states and 991 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:10:51,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:10:51,696 INFO L93 Difference]: Finished difference Result 410 states and 1179 transitions. [2021-10-08 18:10:51,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-08 18:10:51,698 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 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 18 [2021-10-08 18:10:51,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:10:51,700 INFO L225 Difference]: With dead ends: 410 [2021-10-08 18:10:51,700 INFO L226 Difference]: Without dead ends: 400 [2021-10-08 18:10:51,700 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 8127.7ms TimeCoverageRelationStatistics Valid=360, Invalid=1446, Unknown=0, NotChecked=0, Total=1806 [2021-10-08 18:10:51,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2021-10-08 18:10:51,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 288. [2021-10-08 18:10:51,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 287 states have (on average 3.229965156794425) internal successors, (927), 287 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:10:51,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 927 transitions. [2021-10-08 18:10:51,706 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 927 transitions. Word has length 18 [2021-10-08 18:10:51,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:10:51,706 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 927 transitions. [2021-10-08 18:10:51,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:10:51,707 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 927 transitions. [2021-10-08 18:10:51,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:10:51,707 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:10:51,707 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:10:51,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Forceful destruction successful, exit code 0 [2021-10-08 18:10:51,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:10:51,908 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:10:51,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:10:51,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1830782594, now seen corresponding path program 70 times [2021-10-08 18:10:51,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:10:51,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [817107953] [2021-10-08 18:10:51,910 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:10:51,910 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:10:51,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:10:51,912 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:10:51,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2021-10-08 18:10:53,683 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:10:53,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:10:53,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 18:10:53,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:10:54,122 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:10:54,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:10:56,207 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:10:56,207 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:10:56,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [817107953] [2021-10-08 18:10:56,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [817107953] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:10:56,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:10:56,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 18:10:56,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084828341] [2021-10-08 18:10:56,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 18:10:56,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:10:56,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 18:10:56,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2021-10-08 18:10:56,209 INFO L87 Difference]: Start difference. First operand 288 states and 927 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:11:08,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:11:08,904 INFO L93 Difference]: Finished difference Result 566 states and 1500 transitions. [2021-10-08 18:11:08,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-08 18:11:08,906 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 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 18 [2021-10-08 18:11:08,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:11:08,907 INFO L225 Difference]: With dead ends: 566 [2021-10-08 18:11:08,907 INFO L226 Difference]: Without dead ends: 546 [2021-10-08 18:11:08,908 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 12037.2ms TimeCoverageRelationStatistics Valid=719, Invalid=2251, Unknown=0, NotChecked=0, Total=2970 [2021-10-08 18:11:08,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-10-08 18:11:08,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 308. [2021-10-08 18:11:08,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 3.3061889250814334) internal successors, (1015), 307 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:11:08,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 1015 transitions. [2021-10-08 18:11:08,916 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 1015 transitions. Word has length 18 [2021-10-08 18:11:08,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:11:08,916 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 1015 transitions. [2021-10-08 18:11:08,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:11:08,917 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 1015 transitions. [2021-10-08 18:11:08,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:11:08,917 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:11:08,918 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:11:08,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Forceful destruction successful, exit code 0 [2021-10-08 18:11:09,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:11:09,118 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:11:09,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:11:09,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1912890434, now seen corresponding path program 71 times [2021-10-08 18:11:09,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:11:09,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [690507622] [2021-10-08 18:11:09,120 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:11:09,120 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:11:09,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:11:09,122 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:11:09,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2021-10-08 18:11:10,652 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-08 18:11:10,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:11:10,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-08 18:11:10,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:11:11,092 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:11:11,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:11:12,802 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:11:12,802 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:11:12,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [690507622] [2021-10-08 18:11:12,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [690507622] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:11:12,803 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:11:12,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 18:11:12,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702933860] [2021-10-08 18:11:12,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 18:11:12,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:11:12,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 18:11:12,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2021-10-08 18:11:12,805 INFO L87 Difference]: Start difference. First operand 308 states and 1015 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:11:24,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:11:24,684 INFO L93 Difference]: Finished difference Result 569 states and 1526 transitions. [2021-10-08 18:11:24,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-08 18:11:24,686 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 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 18 [2021-10-08 18:11:24,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:11:24,687 INFO L225 Difference]: With dead ends: 569 [2021-10-08 18:11:24,687 INFO L226 Difference]: Without dead ends: 554 [2021-10-08 18:11:24,688 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 943 ImplicationChecksByTransitivity, 11428.3ms TimeCoverageRelationStatistics Valid=866, Invalid=2916, Unknown=0, NotChecked=0, Total=3782 [2021-10-08 18:11:24,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2021-10-08 18:11:24,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 310. [2021-10-08 18:11:24,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 309 states have (on average 3.313915857605178) internal successors, (1024), 309 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:11:24,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 1024 transitions. [2021-10-08 18:11:24,695 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 1024 transitions. Word has length 18 [2021-10-08 18:11:24,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:11:24,695 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 1024 transitions. [2021-10-08 18:11:24,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:11:24,695 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 1024 transitions. [2021-10-08 18:11:24,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:11:24,696 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:11:24,696 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:11:24,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Forceful destruction successful, exit code 0 [2021-10-08 18:11:24,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:11:24,897 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:11:24,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:11:24,898 INFO L82 PathProgramCache]: Analyzing trace with hash 773451870, now seen corresponding path program 72 times [2021-10-08 18:11:24,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:11:24,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1674178647] [2021-10-08 18:11:24,899 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:11:24,899 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:11:24,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:11:24,900 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:11:24,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2021-10-08 18:11:26,690 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 18:11:26,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:11:26,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 18:11:26,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:11:27,165 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:11:27,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:11:29,411 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:11:29,411 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:11:29,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1674178647] [2021-10-08 18:11:29,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1674178647] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:11:29,412 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:11:29,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 18:11:29,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460288980] [2021-10-08 18:11:29,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 18:11:29,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:11:29,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 18:11:29,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2021-10-08 18:11:29,414 INFO L87 Difference]: Start difference. First operand 310 states and 1024 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:11:42,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:11:42,908 INFO L93 Difference]: Finished difference Result 565 states and 1553 transitions. [2021-10-08 18:11:42,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-08 18:11:42,910 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 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 18 [2021-10-08 18:11:42,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:11:42,912 INFO L225 Difference]: With dead ends: 565 [2021-10-08 18:11:42,912 INFO L226 Difference]: Without dead ends: 550 [2021-10-08 18:11:42,912 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 13063.4ms TimeCoverageRelationStatistics Valid=586, Invalid=2170, Unknown=0, NotChecked=0, Total=2756 [2021-10-08 18:11:42,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-10-08 18:11:42,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 326. [2021-10-08 18:11:42,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 325 states have (on average 3.3661538461538463) internal successors, (1094), 325 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:11:42,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 1094 transitions. [2021-10-08 18:11:42,920 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 1094 transitions. Word has length 18 [2021-10-08 18:11:42,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:11:42,920 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 1094 transitions. [2021-10-08 18:11:42,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:11:42,920 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 1094 transitions. [2021-10-08 18:11:42,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:11:42,921 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:11:42,921 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:11:42,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Ended with exit code 0 [2021-10-08 18:11:43,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:11:43,122 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:11:43,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:11:43,123 INFO L82 PathProgramCache]: Analyzing trace with hash 855559710, now seen corresponding path program 73 times [2021-10-08 18:11:43,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:11:43,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1086434606] [2021-10-08 18:11:43,124 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:11:43,124 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:11:43,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:11:43,126 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:11:43,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Waiting until timeout for monitored process [2021-10-08 18:11:44,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:11:44,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 18:11:44,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:11:45,306 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:11:45,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:11:47,487 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:11:47,488 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:11:47,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1086434606] [2021-10-08 18:11:47,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1086434606] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:11:47,488 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:11:47,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 18:11:47,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091679916] [2021-10-08 18:11:47,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 18:11:47,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:11:47,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 18:11:47,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2021-10-08 18:11:47,490 INFO L87 Difference]: Start difference. First operand 326 states and 1094 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:12:02,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:12:02,407 INFO L93 Difference]: Finished difference Result 562 states and 1543 transitions. [2021-10-08 18:12:02,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-08 18:12:02,408 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 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 18 [2021-10-08 18:12:02,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:12:02,410 INFO L225 Difference]: With dead ends: 562 [2021-10-08 18:12:02,410 INFO L226 Difference]: Without dead ends: 542 [2021-10-08 18:12:02,410 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 14512.5ms TimeCoverageRelationStatistics Valid=659, Invalid=2763, Unknown=0, NotChecked=0, Total=3422 [2021-10-08 18:12:02,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2021-10-08 18:12:02,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 314. [2021-10-08 18:12:02,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 313 states have (on average 3.3226837060702876) internal successors, (1040), 313 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:12:02,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 1040 transitions. [2021-10-08 18:12:02,419 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 1040 transitions. Word has length 18 [2021-10-08 18:12:02,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:12:02,419 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 1040 transitions. [2021-10-08 18:12:02,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:12:02,420 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 1040 transitions. [2021-10-08 18:12:02,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:12:02,420 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:12:02,420 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:12:02,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Forceful destruction successful, exit code 0 [2021-10-08 18:12:02,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:12:02,621 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:12:02,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:12:02,622 INFO L82 PathProgramCache]: Analyzing trace with hash -646128894, now seen corresponding path program 74 times [2021-10-08 18:12:02,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:12:02,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [566832577] [2021-10-08 18:12:02,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:12:02,623 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:12:02,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:12:02,625 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:12:02,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2021-10-08 18:12:04,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:12:04,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:12:04,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 18:12:04,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:12:04,945 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:12:04,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:12:07,008 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:12:07,009 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:12:07,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [566832577] [2021-10-08 18:12:07,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [566832577] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:12:07,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:12:07,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 18:12:07,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664345464] [2021-10-08 18:12:07,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 18:12:07,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:12:07,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 18:12:07,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2021-10-08 18:12:07,011 INFO L87 Difference]: Start difference. First operand 314 states and 1040 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:12:18,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:12:18,975 INFO L93 Difference]: Finished difference Result 549 states and 1519 transitions. [2021-10-08 18:12:18,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-08 18:12:18,976 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 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 18 [2021-10-08 18:12:18,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:12:18,978 INFO L225 Difference]: With dead ends: 549 [2021-10-08 18:12:18,978 INFO L226 Difference]: Without dead ends: 534 [2021-10-08 18:12:18,978 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 11508.3ms TimeCoverageRelationStatistics Valid=575, Invalid=2181, Unknown=0, NotChecked=0, Total=2756 [2021-10-08 18:12:18,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2021-10-08 18:12:18,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 326. [2021-10-08 18:12:18,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 325 states have (on average 3.353846153846154) internal successors, (1090), 325 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:12:18,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 1090 transitions. [2021-10-08 18:12:18,988 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 1090 transitions. Word has length 18 [2021-10-08 18:12:18,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:12:18,988 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 1090 transitions. [2021-10-08 18:12:18,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:12:18,988 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 1090 transitions. [2021-10-08 18:12:18,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:12:18,989 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:12:18,989 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:12:19,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Forceful destruction successful, exit code 0 [2021-10-08 18:12:19,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:12:19,190 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:12:19,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:12:19,191 INFO L82 PathProgramCache]: Analyzing trace with hash -564021054, now seen corresponding path program 75 times [2021-10-08 18:12:19,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:12:19,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2116686077] [2021-10-08 18:12:19,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:12:19,192 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:12:19,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:12:19,193 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:12:19,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2021-10-08 18:12:21,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 18:12:21,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:12:21,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-08 18:12:21,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:12:21,518 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:12:21,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:12:23,341 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:12:23,342 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:12:23,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2116686077] [2021-10-08 18:12:23,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2116686077] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:12:23,342 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:12:23,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 18:12:23,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513034004] [2021-10-08 18:12:23,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 18:12:23,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:12:23,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 18:12:23,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2021-10-08 18:12:23,344 INFO L87 Difference]: Start difference. First operand 326 states and 1090 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:12:36,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:12:36,882 INFO L93 Difference]: Finished difference Result 585 states and 1569 transitions. [2021-10-08 18:12:36,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-10-08 18:12:36,884 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 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 18 [2021-10-08 18:12:36,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:12:36,887 INFO L225 Difference]: With dead ends: 585 [2021-10-08 18:12:36,887 INFO L226 Difference]: Without dead ends: 560 [2021-10-08 18:12:36,888 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 927 ImplicationChecksByTransitivity, 12861.3ms TimeCoverageRelationStatistics Valid=685, Invalid=3347, Unknown=0, NotChecked=0, Total=4032 [2021-10-08 18:12:36,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-10-08 18:12:36,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 320. [2021-10-08 18:12:36,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 319 states have (on average 3.3322884012539187) internal successors, (1063), 319 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:12:36,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 1063 transitions. [2021-10-08 18:12:36,899 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 1063 transitions. Word has length 18 [2021-10-08 18:12:36,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:12:36,899 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 1063 transitions. [2021-10-08 18:12:36,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:12:36,899 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 1063 transitions. [2021-10-08 18:12:36,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:12:36,900 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:12:36,901 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:12:36,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Forceful destruction successful, exit code 0 [2021-10-08 18:12:37,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:12:37,113 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:12:37,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:12:37,114 INFO L82 PathProgramCache]: Analyzing trace with hash -830469154, now seen corresponding path program 76 times [2021-10-08 18:12:37,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:12:37,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1967641626] [2021-10-08 18:12:37,114 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:12:37,115 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:12:37,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:12:37,116 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:12:37,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2021-10-08 18:12:39,040 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:12:39,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:12:39,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 18:12:39,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:12:39,474 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:12:39,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:12:41,656 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:12:41,656 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:12:41,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1967641626] [2021-10-08 18:12:41,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1967641626] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:12:41,657 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:12:41,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 18:12:41,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407985559] [2021-10-08 18:12:41,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 18:12:41,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:12:41,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 18:12:41,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2021-10-08 18:12:41,659 INFO L87 Difference]: Start difference. First operand 320 states and 1063 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:12:52,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:12:52,901 INFO L93 Difference]: Finished difference Result 512 states and 1449 transitions. [2021-10-08 18:12:52,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-08 18:12:52,902 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 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 18 [2021-10-08 18:12:52,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:12:52,904 INFO L225 Difference]: With dead ends: 512 [2021-10-08 18:12:52,904 INFO L226 Difference]: Without dead ends: 502 [2021-10-08 18:12:52,905 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 10909.0ms TimeCoverageRelationStatistics Valid=499, Invalid=1951, Unknown=0, NotChecked=0, Total=2450 [2021-10-08 18:12:52,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2021-10-08 18:12:52,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 328. [2021-10-08 18:12:52,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 3.3425076452599387) internal successors, (1093), 327 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:12:52,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 1093 transitions. [2021-10-08 18:12:52,919 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 1093 transitions. Word has length 18 [2021-10-08 18:12:52,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:12:52,919 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 1093 transitions. [2021-10-08 18:12:52,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:12:52,919 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 1093 transitions. [2021-10-08 18:12:52,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:12:52,921 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:12:52,921 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:12:52,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Ended with exit code 0 [2021-10-08 18:12:53,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:12:53,137 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:12:53,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:12:53,138 INFO L82 PathProgramCache]: Analyzing trace with hash -748361314, now seen corresponding path program 77 times [2021-10-08 18:12:53,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:12:53,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [649383625] [2021-10-08 18:12:53,139 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:12:53,139 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:12:53,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:12:53,141 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:12:53,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Waiting until timeout for monitored process [2021-10-08 18:12:54,988 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 18:12:54,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:12:54,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-08 18:12:54,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:12:55,439 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:12:55,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:12:57,179 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:12:57,179 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:12:57,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [649383625] [2021-10-08 18:12:57,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [649383625] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:12:57,179 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:12:57,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 18:12:57,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118563503] [2021-10-08 18:12:57,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 18:12:57,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:12:57,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 18:12:57,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2021-10-08 18:12:57,180 INFO L87 Difference]: Start difference. First operand 328 states and 1093 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:09,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:13:09,044 INFO L93 Difference]: Finished difference Result 570 states and 1608 transitions. [2021-10-08 18:13:09,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-08 18:13:09,045 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 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 18 [2021-10-08 18:13:09,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:13:09,047 INFO L225 Difference]: With dead ends: 570 [2021-10-08 18:13:09,047 INFO L226 Difference]: Without dead ends: 560 [2021-10-08 18:13:09,047 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 11128.4ms TimeCoverageRelationStatistics Valid=686, Invalid=2394, Unknown=0, NotChecked=0, Total=3080 [2021-10-08 18:13:09,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-10-08 18:13:09,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 344. [2021-10-08 18:13:09,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 343 states have (on average 3.4081632653061225) internal successors, (1169), 343 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:09,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 1169 transitions. [2021-10-08 18:13:09,054 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 1169 transitions. Word has length 18 [2021-10-08 18:13:09,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:13:09,054 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 1169 transitions. [2021-10-08 18:13:09,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:13:09,055 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 1169 transitions. [2021-10-08 18:13:09,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:13:09,055 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:13:09,055 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:13:09,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Forceful destruction successful, exit code 0 [2021-10-08 18:13:09,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:13:09,256 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:13:09,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:13:09,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1349121072, now seen corresponding path program 78 times [2021-10-08 18:13:09,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:13:09,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [767531237] [2021-10-08 18:13:09,258 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:13:09,259 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:13:09,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:13:09,260 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:13:09,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2021-10-08 18:13:11,094 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 18:13:11,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:13:11,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 18:13:11,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:13:11,551 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:11,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:13:13,869 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:13:13,869 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:13:13,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [767531237] [2021-10-08 18:13:13,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [767531237] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:13:13,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:13:13,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 18:13:13,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27763079] [2021-10-08 18:13:13,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 18:13:13,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:13:13,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 18:13:13,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2021-10-08 18:13:13,872 INFO L87 Difference]: Start difference. First operand 344 states and 1169 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 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... [2021-10-08 18:13:19,330 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/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 [2021-10-08 18:13:19,330 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-08 18:13:19,330 WARN L223 SmtUtils]: Removed 4 from assertion stack [2021-10-08 18:13:19,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-08 18:13:19,332 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 18:13:19,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Forceful destruction successful, exit code 0 [2021-10-08 18:13:19,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:13:19,533 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (344states) and FLOYD_HOARE automaton (currently 27 states, 22 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 81 for 500ms.. [2021-10-08 18:13:19,536 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-08 18:13:19,536 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-08 18:13:19,536 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-08 18:13:19,537 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-08 18:13:19,537 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-08 18:13:19,537 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-08 18:13:19,537 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-08 18:13:19,537 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-08 18:13:19,537 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 18:13:19,537 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-08 18:13:19,538 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-08 18:13:19,542 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-08 18:13:19,542 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-08 18:13:19,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.10 06:13:19 BasicIcfg [2021-10-08 18:13:19,544 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-08 18:13:19,545 INFO L168 Benchmark]: Toolchain (without parser) took 814403.26 ms. Allocated memory was 173.0 MB in the beginning and 221.2 MB in the end (delta: 48.2 MB). Free memory was 148.2 MB in the beginning and 105.0 MB in the end (delta: 43.2 MB). Peak memory consumption was 92.3 MB. Max. memory is 8.0 GB. [2021-10-08 18:13:19,545 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 173.0 MB. Free memory is still 145.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-08 18:13:19,545 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.07 ms. Allocated memory is still 173.0 MB. Free memory was 147.7 MB in the beginning and 137.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-08 18:13:19,546 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.12 ms. Allocated memory is still 173.0 MB. Free memory was 137.2 MB in the beginning and 135.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-08 18:13:19,546 INFO L168 Benchmark]: Boogie Preprocessor took 34.80 ms. Allocated memory is still 173.0 MB. Free memory was 135.4 MB in the beginning and 134.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-08 18:13:19,546 INFO L168 Benchmark]: RCFGBuilder took 697.77 ms. Allocated memory is still 173.0 MB. Free memory was 134.0 MB in the beginning and 119.2 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-10-08 18:13:19,546 INFO L168 Benchmark]: TraceAbstraction took 813338.45 ms. Allocated memory was 173.0 MB in the beginning and 221.2 MB in the end (delta: 48.2 MB). Free memory was 118.6 MB in the beginning and 105.0 MB in the end (delta: 13.6 MB). Peak memory consumption was 62.9 MB. Max. memory is 8.0 GB. [2021-10-08 18:13:19,548 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 173.0 MB. Free memory is still 145.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 274.07 ms. Allocated memory is still 173.0 MB. Free memory was 147.7 MB in the beginning and 137.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 43.12 ms. Allocated memory is still 173.0 MB. Free memory was 137.2 MB in the beginning and 135.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.80 ms. Allocated memory is still 173.0 MB. Free memory was 135.4 MB in the beginning and 134.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 697.77 ms. Allocated memory is still 173.0 MB. Free memory was 134.0 MB in the beginning and 119.2 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 813338.45 ms. Allocated memory was 173.0 MB in the beginning and 221.2 MB in the end (delta: 48.2 MB). Free memory was 118.6 MB in the beginning and 105.0 MB in the end (delta: 13.6 MB). Peak memory consumption was 62.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8179.3ms, 89 PlacesBefore, 32 PlacesAfterwards, 88 TransitionsBefore, 27 TransitionsAfterwards, 540 CoEnabledTransitionPairs, 8 FixpointIterations, 57 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 90 TotalNumberOfCompositions, 707 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 685, positive: 683, positive conditional: 0, positive unconditional: 683, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 317, positive: 315, positive conditional: 0, positive unconditional: 315, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 317, positive: 315, positive conditional: 0, positive unconditional: 315, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 36, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 685, positive: 368, positive conditional: 0, positive unconditional: 368, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 317, unknown conditional: 0, unknown unconditional: 317] , Statistics on independence cache: Total cache size (in pairs): 32, Positive cache size: 32, Positive conditional cache size: 0, Positive unconditional cache size: 32, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (344states) and FLOYD_HOARE automaton (currently 27 states, 22 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 81 for 500ms.. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (344states) and FLOYD_HOARE automaton (currently 27 states, 22 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 81 for 500ms.. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (344states) and FLOYD_HOARE automaton (currently 27 states, 22 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 81 for 500ms.. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (344states) and FLOYD_HOARE automaton (currently 27 states, 22 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 81 for 500ms.. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (344states) and FLOYD_HOARE automaton (currently 27 states, 22 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 81 for 500ms.. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (344states) and FLOYD_HOARE automaton (currently 27 states, 22 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 81 for 500ms.. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (344states) and FLOYD_HOARE automaton (currently 27 states, 22 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 81 for 500ms.. - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (344states) and FLOYD_HOARE automaton (currently 27 states, 22 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 81 for 500ms.. - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (344states) and FLOYD_HOARE automaton (currently 27 states, 22 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 81 for 500ms.. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (344states) and FLOYD_HOARE automaton (currently 27 states, 22 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 81 for 500ms.. - TimeoutResultAtElement [Line: 72]: 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 (344states) and FLOYD_HOARE automaton (currently 27 states, 22 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 81 for 500ms.. - TimeoutResultAtElement [Line: 73]: 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 (344states) and FLOYD_HOARE automaton (currently 27 states, 22 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 81 for 500ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 100 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 813206.7ms, OverallIterations: 85, TraceHistogramMax: 4, EmptinessCheckTime: 83.1ms, AutomataDifference: 545961.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8240.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3346 SDtfs, 14509 SDslu, 26169 SDs, 0 SdLazy, 31823 SolverSat, 4395 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 91333.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4400 GetRequests, 1160 SyntacticMatches, 2 SemanticMatches, 3237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31987 ImplicationChecksByTransitivity, 523075.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=358occurred in iteration=68, InterpolantAutomatonStates: 2834, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 700.5ms AutomataMinimizationTime, 84 MinimizatonAttempts, 11306 StatesRemovedByMinimization, 77 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 545.3ms SsaConstructionTime, 10351.7ms SatisfiabilityAnalysisTime, 163290.6ms InterpolantComputationTime, 1375 NumberOfCodeBlocks, 1375 NumberOfCodeBlocksAsserted, 172 NumberOfCheckSat, 2580 ConstructedInterpolants, 0 QuantifiedInterpolants, 55349 SizeOfPredicates, 492 NumberOfNonLiveVariables, 6123 ConjunctsInSsa, 1565 ConjunctsInUnsatCore, 170 InterpolantComputations, 14 PerfectInterpolantSequences, 4/1148 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