/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-figure3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-08 17:33:08,484 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 17:33:08,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 17:33:08,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-08 17:33:08,582 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-08 17:33:08,583 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-08 17:33:08,584 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-08 17:33:08,585 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-08 17:33:08,586 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-08 17:33:08,587 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-08 17:33:08,588 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-08 17:33:08,588 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-08 17:33:08,588 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-08 17:33:08,590 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-08 17:33:08,590 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-08 17:33:08,592 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 17:33:08,618 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 17:33:08,619 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 17:33:08,619 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 17:33:08,620 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 17:33:08,621 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 17:33:08,621 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 17:33:08,621 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 17:33:08,622 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 17:33:08,622 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 17:33:08,622 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-08 17:33:08,622 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 17:33:08,623 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 17:33:08,623 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 17:33:08,623 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-08 17:33:08,623 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-08 17:33:08,624 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-08 17:33:08,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 17:33:08,624 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-08 17:33:08,624 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-08 17:33:08,624 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-08 17:33:08,625 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 17:33:08,625 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 17:33:08,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 17:33:08,625 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 17:33:08,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 17:33:08,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 17:33:08,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 17:33:08,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 17:33:08,627 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-08 17:33:08,627 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-08 17:33:08,627 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 17:33:08,627 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-08 17:33:08,628 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-08 17:33:09,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 17:33:09,146 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 17:33:09,149 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 17:33:09,151 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 17:33:09,152 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 17:33:09,153 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-figure3.wvr.c [2021-10-08 17:33:09,239 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f85c600b8/f8b14d9d5660432f97fb0685784bdc12/FLAG7076efe04 [2021-10-08 17:33:09,928 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 17:33:09,929 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure3.wvr.c [2021-10-08 17:33:09,939 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f85c600b8/f8b14d9d5660432f97fb0685784bdc12/FLAG7076efe04 [2021-10-08 17:33:10,261 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f85c600b8/f8b14d9d5660432f97fb0685784bdc12 [2021-10-08 17:33:10,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 17:33:10,277 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-08 17:33:10,281 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 17:33:10,281 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 17:33:10,285 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 17:33:10,286 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 05:33:10" (1/1) ... [2021-10-08 17:33:10,287 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62cecd8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:33:10, skipping insertion in model container [2021-10-08 17:33:10,287 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 05:33:10" (1/1) ... [2021-10-08 17:33:10,295 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 17:33:10,314 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 17:33:10,483 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-figure3.wvr.c[2054,2067] [2021-10-08 17:33:10,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 17:33:10,502 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 17:33:10,525 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-figure3.wvr.c[2054,2067] [2021-10-08 17:33:10,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 17:33:10,546 INFO L208 MainTranslator]: Completed translation [2021-10-08 17:33:10,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:33:10 WrapperNode [2021-10-08 17:33:10,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 17:33:10,548 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 17:33:10,548 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 17:33:10,548 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 17:33:10,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:33:10" (1/1) ... [2021-10-08 17:33:10,567 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:33:10" (1/1) ... [2021-10-08 17:33:10,591 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 17:33:10,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 17:33:10,592 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 17:33:10,592 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 17:33:10,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:33:10" (1/1) ... [2021-10-08 17:33:10,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:33:10" (1/1) ... [2021-10-08 17:33:10,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:33:10" (1/1) ... [2021-10-08 17:33:10,609 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:33:10" (1/1) ... [2021-10-08 17:33:10,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:33:10" (1/1) ... [2021-10-08 17:33:10,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:33:10" (1/1) ... [2021-10-08 17:33:10,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:33:10" (1/1) ... [2021-10-08 17:33:10,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 17:33:10,650 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 17:33:10,650 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 17:33:10,650 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 17:33:10,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:33:10" (1/1) ... [2021-10-08 17:33:10,659 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 17:33:10,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 17:33:10,682 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 17:33:10,684 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 17:33:10,747 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 17:33:10,748 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 17:33:10,748 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 17:33:10,748 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 17:33:10,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-08 17:33:10,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 17:33:10,748 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-08 17:33:10,749 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-08 17:33:10,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-08 17:33:10,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 17:33:10,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 17:33:10,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 17:33:10,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-08 17:33:10,751 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 17:33:11,272 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 17:33:11,275 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-08 17:33:11,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 05:33:11 BoogieIcfgContainer [2021-10-08 17:33:11,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 17:33:11,283 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 17:33:11,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 17:33:11,290 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 17:33:11,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 05:33:10" (1/3) ... [2021-10-08 17:33:11,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74fc2bd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 05:33:11, skipping insertion in model container [2021-10-08 17:33:11,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:33:10" (2/3) ... [2021-10-08 17:33:11,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74fc2bd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 05:33:11, skipping insertion in model container [2021-10-08 17:33:11,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 05:33:11" (3/3) ... [2021-10-08 17:33:11,294 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-figure3.wvr.c [2021-10-08 17:33:11,304 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 17:33:11,304 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-08 17:33:11,305 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 17:33:11,357 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,357 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,358 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,358 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,358 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,359 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,359 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,359 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,359 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,360 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,360 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,360 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,360 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,361 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,361 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,361 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,362 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,362 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,362 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,362 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,363 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,364 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,364 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,376 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,376 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,377 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,377 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,377 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,377 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,377 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,378 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,380 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,380 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,381 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,381 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,381 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,381 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,382 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,382 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,382 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,382 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,382 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,383 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,384 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,388 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,388 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,389 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,410 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,415 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,416 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,416 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,416 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,417 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,417 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:33:11,429 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-08 17:33:11,474 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 17:33:11,482 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 17:33:11,483 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-10-08 17:33:11,499 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 17:33:11,512 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 91 transitions, 198 flow [2021-10-08 17:33:11,515 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 91 transitions, 198 flow [2021-10-08 17:33:11,517 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 91 transitions, 198 flow [2021-10-08 17:33:11,573 INFO L129 PetriNetUnfolder]: 6/89 cut-off events. [2021-10-08 17:33:11,574 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-08 17:33:11,578 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 89 events. 6/89 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2021-10-08 17:33:11,581 INFO L116 LiptonReduction]: Number of co-enabled transitions 660 [2021-10-08 17:33:19,133 INFO L131 LiptonReduction]: Checked pairs total: 759 [2021-10-08 17:33:19,134 INFO L133 LiptonReduction]: Total number of compositions: 89 [2021-10-08 17:33:19,144 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 27 transitions, 70 flow [2021-10-08 17:33:19,165 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 17:33:19,170 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 17:33:19,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-08 17:33:19,185 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:33:19,185 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-08 17:33:19,186 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 17:33:19,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:33:19,197 INFO L82 PathProgramCache]: Analyzing trace with hash 364, now seen corresponding path program 1 times [2021-10-08 17:33:19,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:33:19,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [789360700] [2021-10-08 17:33:19,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:33:19,212 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:33:19,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:33:19,216 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 17:33:19,248 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 17:33:19,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:33:19,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-08 17:33:19,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:33:19,286 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 17:33:19,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:33:19,287 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 17:33:19,288 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:33:19,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [789360700] [2021-10-08 17:33:19,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [789360700] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:33:19,289 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:33:19,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-08 17:33:19,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790467574] [2021-10-08 17:33:19,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-08 17:33:19,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:33:19,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-08 17:33:19,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-08 17:33:19,316 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 17:33:19,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:33:19,333 INFO L93 Difference]: Finished difference Result 64 states and 151 transitions. [2021-10-08 17:33:19,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-08 17:33:19,335 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 17:33:19,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:33:19,346 INFO L225 Difference]: With dead ends: 64 [2021-10-08 17:33:19,347 INFO L226 Difference]: Without dead ends: 64 [2021-10-08 17:33:19,348 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 17:33:19,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-08 17:33:19,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-10-08 17:33:19,402 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 17:33:19,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 151 transitions. [2021-10-08 17:33:19,406 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 151 transitions. Word has length 1 [2021-10-08 17:33:19,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:33:19,406 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 151 transitions. [2021-10-08 17:33:19,407 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 17:33:19,407 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 151 transitions. [2021-10-08 17:33:19,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 17:33:19,407 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:33:19,408 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 17:33:19,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-08 17:33:19,614 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 17:33:19,615 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:33:19,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:33:19,617 INFO L82 PathProgramCache]: Analyzing trace with hash 358609, now seen corresponding path program 1 times [2021-10-08 17:33:19,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:33:19,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [865076725] [2021-10-08 17:33:19,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:33:19,619 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:33:19,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:33:19,621 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 17:33:19,624 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 17:33:19,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:33:19,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 17:33:19,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:33:19,867 INFO L354 Elim1Store]: treesize reduction 142, result has 23.2 percent of original size [2021-10-08 17:33:19,869 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 17:33:20,234 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 17:33:20,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:33:20,244 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 17:33:20,244 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:33:20,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [865076725] [2021-10-08 17:33:20,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [865076725] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:33:20,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:33:20,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 17:33:20,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183014563] [2021-10-08 17:33:20,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 17:33:20,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:33:20,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 17:33:20,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:33:20,249 INFO L87 Difference]: Start difference. First operand 64 states and 151 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 17:33:20,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:33:20,284 INFO L93 Difference]: Finished difference Result 58 states and 139 transitions. [2021-10-08 17:33:20,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:33:20,285 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 17:33:20,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:33:20,287 INFO L225 Difference]: With dead ends: 58 [2021-10-08 17:33:20,287 INFO L226 Difference]: Without dead ends: 58 [2021-10-08 17:33:20,288 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:33:20,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-08 17:33:20,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-10-08 17:33:20,296 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 17:33:20,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 139 transitions. [2021-10-08 17:33:20,298 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 139 transitions. Word has length 3 [2021-10-08 17:33:20,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:33:20,298 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 139 transitions. [2021-10-08 17:33:20,299 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 17:33:20,299 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 139 transitions. [2021-10-08 17:33:20,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 17:33:20,299 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:33:20,299 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 17:33:20,318 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 17:33:20,517 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 17:33:20,518 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:33:20,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:33:20,519 INFO L82 PathProgramCache]: Analyzing trace with hash 358611, now seen corresponding path program 1 times [2021-10-08 17:33:20,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:33:20,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1039427406] [2021-10-08 17:33:20,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:33:20,521 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:33:20,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:33:20,522 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 17:33:20,525 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 17:33:20,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:33:20,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 17:33:20,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:33:20,657 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-08 17:33:20,658 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 17:33:20,716 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 17:33:20,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:33:20,770 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 17:33:20,771 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:33:20,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1039427406] [2021-10-08 17:33:20,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1039427406] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:33:20,771 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:33:20,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:33:20,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619614451] [2021-10-08 17:33:20,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:33:20,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:33:20,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:33:20,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:33:20,774 INFO L87 Difference]: Start difference. First operand 58 states and 139 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 17:33:20,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:33:20,800 INFO L93 Difference]: Finished difference Result 52 states and 127 transitions. [2021-10-08 17:33:20,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:33:20,801 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 17:33:20,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:33:20,802 INFO L225 Difference]: With dead ends: 52 [2021-10-08 17:33:20,802 INFO L226 Difference]: Without dead ends: 52 [2021-10-08 17:33:20,803 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 17:33:20,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-08 17:33:20,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-08 17:33:20,809 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 17:33:20,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 127 transitions. [2021-10-08 17:33:20,811 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 127 transitions. Word has length 3 [2021-10-08 17:33:20,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:33:20,811 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 127 transitions. [2021-10-08 17:33:20,811 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 17:33:20,811 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 127 transitions. [2021-10-08 17:33:20,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 17:33:20,812 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:33:20,812 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 17:33:20,834 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 17:33:21,032 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 17:33:21,036 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:33:21,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:33:21,036 INFO L82 PathProgramCache]: Analyzing trace with hash 344632100, now seen corresponding path program 1 times [2021-10-08 17:33:21,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:33:21,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [96118735] [2021-10-08 17:33:21,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:33:21,037 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:33:21,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:33:21,041 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 17:33:21,042 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 17:33:21,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:33:21,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 17:33:21,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:33:21,190 INFO L354 Elim1Store]: treesize reduction 142, result has 23.2 percent of original size [2021-10-08 17:33:21,191 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 17:33:21,471 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 17:33:21,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:33:21,485 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 17:33:21,486 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:33:21,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [96118735] [2021-10-08 17:33:21,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [96118735] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:33:21,487 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:33:21,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 17:33:21,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807911516] [2021-10-08 17:33:21,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 17:33:21,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:33:21,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 17:33:21,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:33:21,489 INFO L87 Difference]: Start difference. First operand 52 states and 127 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 17:33:21,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:33:21,506 INFO L93 Difference]: Finished difference Result 43 states and 100 transitions. [2021-10-08 17:33:21,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:33:21,507 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 17:33:21,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:33:21,508 INFO L225 Difference]: With dead ends: 43 [2021-10-08 17:33:21,508 INFO L226 Difference]: Without dead ends: 43 [2021-10-08 17:33:21,508 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:33:21,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-08 17:33:21,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-10-08 17:33:21,513 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 17:33:21,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 100 transitions. [2021-10-08 17:33:21,514 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 100 transitions. Word has length 5 [2021-10-08 17:33:21,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:33:21,515 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 100 transitions. [2021-10-08 17:33:21,515 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 17:33:21,516 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 100 transitions. [2021-10-08 17:33:21,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 17:33:21,516 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:33:21,516 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 17:33:21,529 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 17:33:21,728 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 17:33:21,728 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:33:21,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:33:21,730 INFO L82 PathProgramCache]: Analyzing trace with hash 344632101, now seen corresponding path program 1 times [2021-10-08 17:33:21,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:33:21,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [880232097] [2021-10-08 17:33:21,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:33:21,732 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:33:21,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:33:21,734 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 17:33:21,735 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 17:33:21,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:33:21,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:33:21,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:33:21,882 INFO L354 Elim1Store]: treesize reduction 82, result has 24.8 percent of original size [2021-10-08 17:33:21,883 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 35 treesize of output 51 [2021-10-08 17:33:21,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 94 [2021-10-08 17:33:22,073 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 17:33:22,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:33:22,151 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 17:33:22,151 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:33:22,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [880232097] [2021-10-08 17:33:22,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [880232097] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:33:22,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:33:22,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:33:22,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154141328] [2021-10-08 17:33:22,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:33:22,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:33:22,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:33:22,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:33:22,154 INFO L87 Difference]: Start difference. First operand 43 states and 100 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 17:33:22,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:33:22,168 INFO L93 Difference]: Finished difference Result 34 states and 73 transitions. [2021-10-08 17:33:22,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:33:22,169 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 17:33:22,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:33:22,170 INFO L225 Difference]: With dead ends: 34 [2021-10-08 17:33:22,170 INFO L226 Difference]: Without dead ends: 34 [2021-10-08 17:33:22,171 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:33:22,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-08 17:33:22,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-08 17:33:22,174 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 17:33:22,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 73 transitions. [2021-10-08 17:33:22,175 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 73 transitions. Word has length 5 [2021-10-08 17:33:22,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:33:22,176 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 73 transitions. [2021-10-08 17:33:22,176 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 17:33:22,176 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 73 transitions. [2021-10-08 17:33:22,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-08 17:33:22,177 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:33:22,177 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:33:22,198 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 17:33:22,387 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 17:33:22,388 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 17:33:22,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:33:22,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1135009574, now seen corresponding path program 1 times [2021-10-08 17:33:22,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:33:22,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [798106750] [2021-10-08 17:33:22,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:33:22,391 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:33:22,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:33:22,392 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 17:33:22,401 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 17:33:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:33:22,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:33:22,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:33:22,503 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 17:33:22,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:33:22,544 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 17:33:22,545 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:33:22,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [798106750] [2021-10-08 17:33:22,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [798106750] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:33:22,547 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:33:22,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 17:33:22,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651156939] [2021-10-08 17:33:22,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 17:33:22,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:33:22,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 17:33:22,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:33:22,559 INFO L87 Difference]: Start difference. First operand 34 states and 73 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 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 17:33:22,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:33:22,578 INFO L93 Difference]: Finished difference Result 57 states and 116 transitions. [2021-10-08 17:33:22,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:33:22,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 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 17:33:22,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:33:22,582 INFO L225 Difference]: With dead ends: 57 [2021-10-08 17:33:22,582 INFO L226 Difference]: Without dead ends: 42 [2021-10-08 17:33:22,583 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:33:22,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-08 17:33:22,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-10-08 17:33:22,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 41 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:22,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 88 transitions. [2021-10-08 17:33:22,597 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 88 transitions. Word has length 13 [2021-10-08 17:33:22,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:33:22,598 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 88 transitions. [2021-10-08 17:33:22,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 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 17:33:22,598 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 88 transitions. [2021-10-08 17:33:22,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 17:33:22,600 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:33:22,600 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:33:22,615 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 17:33:22,807 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 17:33:22,808 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 17:33:22,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:33:22,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1445930664, now seen corresponding path program 1 times [2021-10-08 17:33:22,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:33:22,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [723902067] [2021-10-08 17:33:22,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:33:22,811 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:33:22,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:33:22,813 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 17:33:22,818 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 17:33:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:33:22,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 17:33:22,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:33:22,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:22,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:33:22,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:22,965 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:33:22,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [723902067] [2021-10-08 17:33:22,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [723902067] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:33:22,965 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:33:22,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-08 17:33:22,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469331410] [2021-10-08 17:33:22,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:33:22,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:33:22,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:33:22,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:33:22,968 INFO L87 Difference]: Start difference. First operand 42 states and 88 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 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 17:33:23,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:33:23,016 INFO L93 Difference]: Finished difference Result 56 states and 114 transitions. [2021-10-08 17:33:23,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 17:33:23,017 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 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 17:33:23,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:33:23,018 INFO L225 Difference]: With dead ends: 56 [2021-10-08 17:33:23,018 INFO L226 Difference]: Without dead ends: 52 [2021-10-08 17:33:23,018 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 17:33:23,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-08 17:33:23,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 42. [2021-10-08 17:33:23,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 2.1951219512195124) internal successors, (90), 41 states have internal predecessors, (90), 0 states have call successors, (0), 0 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 17:33:23,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 90 transitions. [2021-10-08 17:33:23,023 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 90 transitions. Word has length 14 [2021-10-08 17:33:23,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:33:23,023 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 90 transitions. [2021-10-08 17:33:23,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 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 17:33:23,023 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 90 transitions. [2021-10-08 17:33:23,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 17:33:23,024 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:33:23,025 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:33:23,038 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 17:33:23,239 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 17:33:23,240 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 17:33:23,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:33:23,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1748346886, now seen corresponding path program 2 times [2021-10-08 17:33:23,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:33:23,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1195423975] [2021-10-08 17:33:23,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:33:23,242 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:33:23,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:33:23,244 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 17:33:23,251 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 17:33:23,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:33:23,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:33:23,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 17:33:23,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:33:23,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:23,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:33:23,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:23,497 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:33:23,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1195423975] [2021-10-08 17:33:23,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1195423975] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:33:23,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:33:23,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2021-10-08 17:33:23,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371721665] [2021-10-08 17:33:23,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 17:33:23,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:33:23,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 17:33:23,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-08 17:33:23,500 INFO L87 Difference]: Start difference. First operand 42 states and 90 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 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 17:33:23,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:33:23,555 INFO L93 Difference]: Finished difference Result 60 states and 123 transitions. [2021-10-08 17:33:23,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 17:33:23,558 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 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 17:33:23,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:33:23,559 INFO L225 Difference]: With dead ends: 60 [2021-10-08 17:33:23,559 INFO L226 Difference]: Without dead ends: 60 [2021-10-08 17:33:23,560 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 50.0ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-08 17:33:23,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-08 17:33:23,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 50. [2021-10-08 17:33:23,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 2.183673469387755) internal successors, (107), 49 states have internal predecessors, (107), 0 states have call successors, (0), 0 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 17:33:23,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 107 transitions. [2021-10-08 17:33:23,571 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 107 transitions. Word has length 14 [2021-10-08 17:33:23,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:33:23,571 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 107 transitions. [2021-10-08 17:33:23,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 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 17:33:23,572 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 107 transitions. [2021-10-08 17:33:23,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 17:33:23,573 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:33:23,573 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:33:23,587 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 17:33:23,773 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 17:33:23,774 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 17:33:23,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:33:23,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1026509892, now seen corresponding path program 3 times [2021-10-08 17:33:23,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:33:23,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [130616757] [2021-10-08 17:33:23,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:33:23,777 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:33:23,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:33:23,778 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 17:33:23,793 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 17:33:23,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 17:33:23,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:33:23,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 17:33:23,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:33:23,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:23,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:33:24,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:24,018 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:33:24,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [130616757] [2021-10-08 17:33:24,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [130616757] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:33:24,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:33:24,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-10-08 17:33:24,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609468533] [2021-10-08 17:33:24,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 17:33:24,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:33:24,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 17:33:24,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-08 17:33:24,020 INFO L87 Difference]: Start difference. First operand 50 states and 107 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 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 17:33:24,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:33:24,077 INFO L93 Difference]: Finished difference Result 56 states and 121 transitions. [2021-10-08 17:33:24,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 17:33:24,078 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 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 17:33:24,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:33:24,079 INFO L225 Difference]: With dead ends: 56 [2021-10-08 17:33:24,079 INFO L226 Difference]: Without dead ends: 56 [2021-10-08 17:33:24,079 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 43.7ms TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-08 17:33:24,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-08 17:33:24,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 48. [2021-10-08 17:33:24,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 2.2127659574468086) internal successors, (104), 47 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:24,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 104 transitions. [2021-10-08 17:33:24,084 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 104 transitions. Word has length 14 [2021-10-08 17:33:24,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:33:24,084 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 104 transitions. [2021-10-08 17:33:24,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 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 17:33:24,084 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 104 transitions. [2021-10-08 17:33:24,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 17:33:24,085 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:33:24,085 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:33:24,099 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 17:33:24,286 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 17:33:24,287 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 17:33:24,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:33:24,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1568438104, now seen corresponding path program 4 times [2021-10-08 17:33:24,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:33:24,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1601209317] [2021-10-08 17:33:24,289 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:33:24,289 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:33:24,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:33:24,290 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 17:33:24,291 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 17:33:24,361 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:33:24,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:33:24,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 17:33:24,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:33:24,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:24,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:33:24,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:24,435 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:33:24,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1601209317] [2021-10-08 17:33:24,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1601209317] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:33:24,435 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:33:24,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-10-08 17:33:24,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211851821] [2021-10-08 17:33:24,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 17:33:24,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:33:24,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 17:33:24,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 17:33:24,437 INFO L87 Difference]: Start difference. First operand 48 states and 104 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 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 17:33:24,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:33:24,498 INFO L93 Difference]: Finished difference Result 54 states and 118 transitions. [2021-10-08 17:33:24,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 17:33:24,499 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 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 17:33:24,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:33:24,500 INFO L225 Difference]: With dead ends: 54 [2021-10-08 17:33:24,501 INFO L226 Difference]: Without dead ends: 54 [2021-10-08 17:33:24,501 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 13.0ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 17:33:24,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-08 17:33:24,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2021-10-08 17:33:24,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 2.2653061224489797) internal successors, (111), 49 states have internal predecessors, (111), 0 states have call successors, (0), 0 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 17:33:24,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 111 transitions. [2021-10-08 17:33:24,505 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 111 transitions. Word has length 14 [2021-10-08 17:33:24,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:33:24,505 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 111 transitions. [2021-10-08 17:33:24,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 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 17:33:24,506 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 111 transitions. [2021-10-08 17:33:24,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 17:33:24,506 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:33:24,507 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:33:24,524 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 17:33:24,713 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 17:33:24,714 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 17:33:24,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:33:24,715 INFO L82 PathProgramCache]: Analyzing trace with hash -816808786, now seen corresponding path program 1 times [2021-10-08 17:33:24,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:33:24,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1115863241] [2021-10-08 17:33:24,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:33:24,716 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:33:24,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:33:24,717 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 17:33:24,724 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 17:33:24,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:33:24,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 17:33:24,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:33:25,009 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 17:33:25,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:33:25,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:25,157 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:33:25,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1115863241] [2021-10-08 17:33:25,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1115863241] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:33:25,158 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:33:25,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-08 17:33:25,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298738143] [2021-10-08 17:33:25,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 17:33:25,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:33:25,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 17:33:25,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-10-08 17:33:25,160 INFO L87 Difference]: Start difference. First operand 50 states and 111 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 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 17:33:25,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:33:25,224 INFO L93 Difference]: Finished difference Result 93 states and 200 transitions. [2021-10-08 17:33:25,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 17:33:25,225 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 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 17:33:25,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:33:25,226 INFO L225 Difference]: With dead ends: 93 [2021-10-08 17:33:25,227 INFO L226 Difference]: Without dead ends: 74 [2021-10-08 17:33:25,227 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 56.9ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-10-08 17:33:25,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-08 17:33:25,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 66. [2021-10-08 17:33:25,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 2.2615384615384615) internal successors, (147), 65 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 17:33:25,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 147 transitions. [2021-10-08 17:33:25,232 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 147 transitions. Word has length 15 [2021-10-08 17:33:25,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:33:25,233 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 147 transitions. [2021-10-08 17:33:25,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 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 17:33:25,233 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 147 transitions. [2021-10-08 17:33:25,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 17:33:25,234 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:33:25,234 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:33:25,249 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 17:33:25,445 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 17:33:25,446 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 17:33:25,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:33:25,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1395535152, now seen corresponding path program 5 times [2021-10-08 17:33:25,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:33:25,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [555425825] [2021-10-08 17:33:25,448 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:33:25,449 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:33:25,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:33:25,450 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 17:33:25,466 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 17:33:25,560 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:33:25,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:33:25,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 17:33:25,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:33:25,618 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:25,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:33:25,658 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:25,659 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:33:25,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [555425825] [2021-10-08 17:33:25,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [555425825] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:33:25,659 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:33:25,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2021-10-08 17:33:25,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121287822] [2021-10-08 17:33:25,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:33:25,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:33:25,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:33:25,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 17:33:25,661 INFO L87 Difference]: Start difference. First operand 66 states and 147 transitions. Second operand has 4 states, 4 states have (on average 3.75) 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 17:33:25,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:33:25,693 INFO L93 Difference]: Finished difference Result 74 states and 163 transitions. [2021-10-08 17:33:25,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 17:33:25,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) 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 15 [2021-10-08 17:33:25,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:33:25,695 INFO L225 Difference]: With dead ends: 74 [2021-10-08 17:33:25,695 INFO L226 Difference]: Without dead ends: 74 [2021-10-08 17:33:25,696 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 12.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 17:33:25,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-08 17:33:25,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 60. [2021-10-08 17:33:25,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 2.2033898305084745) internal successors, (130), 59 states have internal predecessors, (130), 0 states have call successors, (0), 0 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 17:33:25,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 130 transitions. [2021-10-08 17:33:25,699 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 130 transitions. Word has length 15 [2021-10-08 17:33:25,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:33:25,700 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 130 transitions. [2021-10-08 17:33:25,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) 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 17:33:25,700 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 130 transitions. [2021-10-08 17:33:25,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 17:33:25,701 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:33:25,701 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:33:25,716 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 17:33:25,912 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 17:33:25,913 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 17:33:25,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:33:25,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1741635616, now seen corresponding path program 2 times [2021-10-08 17:33:25,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:33:25,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [582443046] [2021-10-08 17:33:25,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:33:25,915 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:33:25,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:33:25,917 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 17:33:25,919 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 17:33:26,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:33:26,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:33:26,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 17:33:26,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:33:26,161 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:26,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:33:26,512 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:26,513 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:33:26,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [582443046] [2021-10-08 17:33:26,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [582443046] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:33:26,513 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:33:26,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2021-10-08 17:33:26,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119215218] [2021-10-08 17:33:26,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:33:26,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:33:26,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:33:26,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:33:26,516 INFO L87 Difference]: Start difference. First operand 60 states and 130 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 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 17:33:27,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:33:27,796 INFO L93 Difference]: Finished difference Result 106 states and 235 transitions. [2021-10-08 17:33:27,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 17:33:27,799 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 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 16 [2021-10-08 17:33:27,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:33:27,800 INFO L225 Difference]: With dead ends: 106 [2021-10-08 17:33:27,800 INFO L226 Difference]: Without dead ends: 104 [2021-10-08 17:33:27,800 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1121.7ms TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:33:27,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-10-08 17:33:27,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 82. [2021-10-08 17:33:27,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 2.382716049382716) internal successors, (193), 81 states have internal predecessors, (193), 0 states have call successors, (0), 0 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 17:33:27,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 193 transitions. [2021-10-08 17:33:27,812 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 193 transitions. Word has length 16 [2021-10-08 17:33:27,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:33:27,812 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 193 transitions. [2021-10-08 17:33:27,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 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 17:33:27,812 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 193 transitions. [2021-10-08 17:33:27,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 17:33:27,813 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:33:27,814 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:33:27,829 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 17:33:28,027 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 17:33:28,027 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 17:33:28,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:33:28,028 INFO L82 PathProgramCache]: Analyzing trace with hash 880977148, now seen corresponding path program 3 times [2021-10-08 17:33:28,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:33:28,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [108739147] [2021-10-08 17:33:28,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:33:28,030 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:33:28,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:33:28,031 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 17:33:28,032 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 17:33:28,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 17:33:28,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:33:28,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 17:33:28,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:33:28,310 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:28,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:33:28,655 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:28,656 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:33:28,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [108739147] [2021-10-08 17:33:28,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [108739147] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:33:28,657 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:33:28,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2021-10-08 17:33:28,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012471206] [2021-10-08 17:33:28,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:33:28,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:33:28,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:33:28,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:33:28,659 INFO L87 Difference]: Start difference. First operand 82 states and 193 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 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 17:33:30,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:33:30,711 INFO L93 Difference]: Finished difference Result 196 states and 415 transitions. [2021-10-08 17:33:30,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-08 17:33:30,713 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 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 16 [2021-10-08 17:33:30,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:33:30,714 INFO L225 Difference]: With dead ends: 196 [2021-10-08 17:33:30,715 INFO L226 Difference]: Without dead ends: 192 [2021-10-08 17:33:30,715 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1646.4ms TimeCoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2021-10-08 17:33:30,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-10-08 17:33:30,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 100. [2021-10-08 17:33:30,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 2.6464646464646466) internal successors, (262), 99 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:30,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 262 transitions. [2021-10-08 17:33:30,722 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 262 transitions. Word has length 16 [2021-10-08 17:33:30,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:33:30,722 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 262 transitions. [2021-10-08 17:33:30,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 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 17:33:30,723 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 262 transitions. [2021-10-08 17:33:30,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 17:33:30,724 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:33:30,724 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:33:30,737 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 17:33:30,936 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 17:33:30,937 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 17:33:30,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:33:30,938 INFO L82 PathProgramCache]: Analyzing trace with hash -2140713416, now seen corresponding path program 4 times [2021-10-08 17:33:30,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:33:30,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [24265973] [2021-10-08 17:33:30,939 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:33:30,939 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:33:30,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:33:30,940 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 17:33:30,941 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 17:33:31,050 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:33:31,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:33:31,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 17:33:31,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:33:31,196 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:31,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:33:31,477 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:31,477 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:33:31,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [24265973] [2021-10-08 17:33:31,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [24265973] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:33:31,478 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:33:31,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-08 17:33:31,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430292719] [2021-10-08 17:33:31,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 17:33:31,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:33:31,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 17:33:31,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-10-08 17:33:31,480 INFO L87 Difference]: Start difference. First operand 100 states and 262 transitions. Second operand has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 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 17:33:32,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:33:32,694 INFO L93 Difference]: Finished difference Result 186 states and 437 transitions. [2021-10-08 17:33:32,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 17:33:32,696 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 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 16 [2021-10-08 17:33:32,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:33:32,697 INFO L225 Difference]: With dead ends: 186 [2021-10-08 17:33:32,697 INFO L226 Difference]: Without dead ends: 186 [2021-10-08 17:33:32,698 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 915.1ms TimeCoverageRelationStatistics Valid=169, Invalid=383, Unknown=0, NotChecked=0, Total=552 [2021-10-08 17:33:32,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-10-08 17:33:32,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 116. [2021-10-08 17:33:32,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 2.6782608695652175) internal successors, (308), 115 states have internal predecessors, (308), 0 states have call successors, (0), 0 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 17:33:32,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 308 transitions. [2021-10-08 17:33:32,704 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 308 transitions. Word has length 16 [2021-10-08 17:33:32,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:33:32,705 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 308 transitions. [2021-10-08 17:33:32,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 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 17:33:32,705 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 308 transitions. [2021-10-08 17:33:32,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 17:33:32,706 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:33:32,706 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:33:32,719 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 17:33:32,918 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 17:33:32,919 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 17:33:32,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:33:32,920 INFO L82 PathProgramCache]: Analyzing trace with hash 177416210, now seen corresponding path program 5 times [2021-10-08 17:33:32,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:33:32,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [740400389] [2021-10-08 17:33:32,921 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:33:32,921 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:33:32,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:33:32,922 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 17:33:32,923 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 17:33:33,041 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:33:33,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:33:33,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 17:33:33,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:33:33,186 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:33,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:33:33,494 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:33,495 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:33:33,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [740400389] [2021-10-08 17:33:33,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [740400389] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:33:33,495 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:33:33,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-08 17:33:33,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125323405] [2021-10-08 17:33:33,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:33:33,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:33:33,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:33:33,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:33:33,497 INFO L87 Difference]: Start difference. First operand 116 states and 308 transitions. Second operand has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 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 17:33:35,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:33:35,097 INFO L93 Difference]: Finished difference Result 234 states and 564 transitions. [2021-10-08 17:33:35,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 17:33:35,099 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 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 16 [2021-10-08 17:33:35,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:33:35,101 INFO L225 Difference]: With dead ends: 234 [2021-10-08 17:33:35,101 INFO L226 Difference]: Without dead ends: 226 [2021-10-08 17:33:35,101 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1269.1ms TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-10-08 17:33:35,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-10-08 17:33:35,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 136. [2021-10-08 17:33:35,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 2.814814814814815) internal successors, (380), 135 states have internal predecessors, (380), 0 states have call successors, (0), 0 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 17:33:35,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 380 transitions. [2021-10-08 17:33:35,109 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 380 transitions. Word has length 16 [2021-10-08 17:33:35,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:33:35,109 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 380 transitions. [2021-10-08 17:33:35,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 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 17:33:35,109 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 380 transitions. [2021-10-08 17:33:35,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 17:33:35,110 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:33:35,110 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:33:35,121 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 17:33:35,316 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 17:33:35,317 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 17:33:35,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:33:35,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1988689922, now seen corresponding path program 6 times [2021-10-08 17:33:35,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:33:35,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [980109054] [2021-10-08 17:33:35,318 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:33:35,319 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:33:35,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:33:35,322 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 17:33:35,323 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 17:33:35,468 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 17:33:35,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:33:35,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 17:33:35,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:33:35,569 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:35,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:33:35,768 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:35,769 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:33:35,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [980109054] [2021-10-08 17:33:35,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [980109054] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:33:35,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:33:35,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2021-10-08 17:33:35,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699640132] [2021-10-08 17:33:35,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:33:35,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:33:35,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:33:35,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:33:35,772 INFO L87 Difference]: Start difference. First operand 136 states and 380 transitions. Second operand has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 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 17:33:36,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:33:36,537 INFO L93 Difference]: Finished difference Result 226 states and 582 transitions. [2021-10-08 17:33:36,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 17:33:36,538 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 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 16 [2021-10-08 17:33:36,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:33:36,540 INFO L225 Difference]: With dead ends: 226 [2021-10-08 17:33:36,540 INFO L226 Difference]: Without dead ends: 224 [2021-10-08 17:33:36,541 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 565.1ms TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2021-10-08 17:33:36,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-10-08 17:33:36,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 144. [2021-10-08 17:33:36,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 2.839160839160839) internal successors, (406), 143 states have internal predecessors, (406), 0 states have call successors, (0), 0 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 17:33:36,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 406 transitions. [2021-10-08 17:33:36,548 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 406 transitions. Word has length 16 [2021-10-08 17:33:36,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:33:36,549 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 406 transitions. [2021-10-08 17:33:36,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 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 17:33:36,549 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 406 transitions. [2021-10-08 17:33:36,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 17:33:36,550 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:33:36,550 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:33:36,562 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 17:33:36,762 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 17:33:36,763 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 17:33:36,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:33:36,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1445618906, now seen corresponding path program 7 times [2021-10-08 17:33:36,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:33:36,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [987044210] [2021-10-08 17:33:36,765 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:33:36,765 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:33:36,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:33:36,767 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 17:33:36,770 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 17:33:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:33:36,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 17:33:36,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:33:37,009 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:37,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:33:37,166 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:37,166 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:33:37,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [987044210] [2021-10-08 17:33:37,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [987044210] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:33:37,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:33:37,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2021-10-08 17:33:37,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438558982] [2021-10-08 17:33:37,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 17:33:37,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:33:37,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 17:33:37,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-10-08 17:33:37,175 INFO L87 Difference]: Start difference. First operand 144 states and 406 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 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 17:33:37,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:33:37,690 INFO L93 Difference]: Finished difference Result 222 states and 559 transitions. [2021-10-08 17:33:37,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 17:33:37,693 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 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 16 [2021-10-08 17:33:37,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:33:37,697 INFO L225 Difference]: With dead ends: 222 [2021-10-08 17:33:37,697 INFO L226 Difference]: Without dead ends: 214 [2021-10-08 17:33:37,700 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 355.5ms TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:33:37,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-10-08 17:33:37,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 146. [2021-10-08 17:33:37,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 2.793103448275862) internal successors, (405), 145 states have internal predecessors, (405), 0 states have call successors, (0), 0 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 17:33:37,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 405 transitions. [2021-10-08 17:33:37,715 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 405 transitions. Word has length 16 [2021-10-08 17:33:37,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:33:37,716 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 405 transitions. [2021-10-08 17:33:37,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 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 17:33:37,716 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 405 transitions. [2021-10-08 17:33:37,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 17:33:37,717 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:33:37,717 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:33:37,731 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 17:33:37,930 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 17:33:37,931 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 17:33:37,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:33:37,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1576071658, now seen corresponding path program 8 times [2021-10-08 17:33:37,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:33:37,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1615355024] [2021-10-08 17:33:37,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:33:37,934 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:33:37,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:33:37,935 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 17:33:37,939 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 17:33:38,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:33:38,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:33:38,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 17:33:38,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:33:38,233 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:38,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:33:38,434 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:38,435 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:33:38,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1615355024] [2021-10-08 17:33:38,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1615355024] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:33:38,435 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:33:38,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-08 17:33:38,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12414193] [2021-10-08 17:33:38,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:33:38,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:33:38,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:33:38,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:33:38,437 INFO L87 Difference]: Start difference. First operand 146 states and 405 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 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 17:33:39,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:33:39,054 INFO L93 Difference]: Finished difference Result 212 states and 536 transitions. [2021-10-08 17:33:39,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 17:33:39,056 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 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 16 [2021-10-08 17:33:39,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:33:39,057 INFO L225 Difference]: With dead ends: 212 [2021-10-08 17:33:39,057 INFO L226 Difference]: Without dead ends: 212 [2021-10-08 17:33:39,058 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 540.6ms TimeCoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:33:39,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-10-08 17:33:39,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 152. [2021-10-08 17:33:39,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.8211920529801326) internal successors, (426), 151 states have internal predecessors, (426), 0 states have call successors, (0), 0 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 17:33:39,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 426 transitions. [2021-10-08 17:33:39,065 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 426 transitions. Word has length 16 [2021-10-08 17:33:39,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:33:39,066 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 426 transitions. [2021-10-08 17:33:39,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 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 17:33:39,066 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 426 transitions. [2021-10-08 17:33:39,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 17:33:39,067 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:33:39,067 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:33:39,079 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 17:33:39,279 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 17:33:39,280 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 17:33:39,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:33:39,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1956166270, now seen corresponding path program 9 times [2021-10-08 17:33:39,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:33:39,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [762158765] [2021-10-08 17:33:39,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:33:39,282 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:33:39,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:33:39,283 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 17:33:39,284 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 17:33:39,443 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 17:33:39,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:33:39,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 17:33:39,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:33:39,587 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:39,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:33:39,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:39,768 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:33:39,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [762158765] [2021-10-08 17:33:39,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [762158765] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:33:39,768 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:33:39,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-08 17:33:39,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151245329] [2021-10-08 17:33:39,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 17:33:39,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:33:39,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 17:33:39,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:33:39,770 INFO L87 Difference]: Start difference. First operand 152 states and 426 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 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 17:33:40,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:33:40,213 INFO L93 Difference]: Finished difference Result 240 states and 610 transitions. [2021-10-08 17:33:40,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-08 17:33:40,214 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 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 16 [2021-10-08 17:33:40,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:33:40,216 INFO L225 Difference]: With dead ends: 240 [2021-10-08 17:33:40,216 INFO L226 Difference]: Without dead ends: 240 [2021-10-08 17:33:40,217 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 373.1ms TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:33:40,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-10-08 17:33:40,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 144. [2021-10-08 17:33:40,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 2.7832167832167833) internal successors, (398), 143 states have internal predecessors, (398), 0 states have call successors, (0), 0 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 17:33:40,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 398 transitions. [2021-10-08 17:33:40,224 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 398 transitions. Word has length 16 [2021-10-08 17:33:40,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:33:40,225 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 398 transitions. [2021-10-08 17:33:40,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 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 17:33:40,225 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 398 transitions. [2021-10-08 17:33:40,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 17:33:40,226 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:33:40,226 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:33:40,239 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 17:33:40,438 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 17:33:40,439 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 17:33:40,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:33:40,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1133967802, now seen corresponding path program 10 times [2021-10-08 17:33:40,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:33:40,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [682830434] [2021-10-08 17:33:40,441 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:33:40,441 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:33:40,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:33:40,442 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 17:33:40,443 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 17:33:40,583 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:33:40,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:33:40,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 17:33:40,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:33:40,720 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 17:33:40,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:33:40,975 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 17:33:40,975 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:33:40,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [682830434] [2021-10-08 17:33:40,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [682830434] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:33:40,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:33:40,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-08 17:33:40,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662229584] [2021-10-08 17:33:40,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 17:33:40,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:33:40,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 17:33:40,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:33:40,979 INFO L87 Difference]: Start difference. First operand 144 states and 398 transitions. Second operand has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 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 17:33:42,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:33:42,356 INFO L93 Difference]: Finished difference Result 358 states and 825 transitions. [2021-10-08 17:33:42,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 17:33:42,359 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 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 17:33:42,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:33:42,362 INFO L225 Difference]: With dead ends: 358 [2021-10-08 17:33:42,362 INFO L226 Difference]: Without dead ends: 354 [2021-10-08 17:33:42,363 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 1093.0ms TimeCoverageRelationStatistics Valid=346, Invalid=844, Unknown=0, NotChecked=0, Total=1190 [2021-10-08 17:33:42,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-10-08 17:33:42,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 150. [2021-10-08 17:33:42,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.791946308724832) internal successors, (416), 149 states have internal predecessors, (416), 0 states have call successors, (0), 0 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 17:33:42,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 416 transitions. [2021-10-08 17:33:42,372 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 416 transitions. Word has length 17 [2021-10-08 17:33:42,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:33:42,372 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 416 transitions. [2021-10-08 17:33:42,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 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 17:33:42,373 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 416 transitions. [2021-10-08 17:33:42,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 17:33:42,374 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:33:42,374 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:33:42,386 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 17:33:42,586 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 17:33:42,586 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 17:33:42,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:33:42,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1925030200, now seen corresponding path program 11 times [2021-10-08 17:33:42,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:33:42,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [760542824] [2021-10-08 17:33:42,588 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:33:42,589 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:33:42,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:33:42,590 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 17:33:42,590 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 17:33:42,781 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:33:42,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:33:42,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 17:33:42,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:33:42,987 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 17:33:42,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:33:43,238 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:43,238 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:33:43,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [760542824] [2021-10-08 17:33:43,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [760542824] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:33:43,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:33:43,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 17:33:43,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961484162] [2021-10-08 17:33:43,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 17:33:43,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:33:43,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 17:33:43,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:33:43,241 INFO L87 Difference]: Start difference. First operand 150 states and 416 transitions. Second operand has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 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 17:33:43,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:33:43,429 INFO L93 Difference]: Finished difference Result 267 states and 716 transitions. [2021-10-08 17:33:43,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 17:33:43,429 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 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 17:33:43,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:33:43,432 INFO L225 Difference]: With dead ends: 267 [2021-10-08 17:33:43,432 INFO L226 Difference]: Without dead ends: 244 [2021-10-08 17:33:43,432 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 139.4ms TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:33:43,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-10-08 17:33:43,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 194. [2021-10-08 17:33:43,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 2.854922279792746) internal successors, (551), 193 states have internal predecessors, (551), 0 states have call successors, (0), 0 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 17:33:43,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 551 transitions. [2021-10-08 17:33:43,442 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 551 transitions. Word has length 17 [2021-10-08 17:33:43,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:33:43,442 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 551 transitions. [2021-10-08 17:33:43,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 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 17:33:43,442 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 551 transitions. [2021-10-08 17:33:43,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 17:33:43,443 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:33:43,443 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:33:43,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-10-08 17:33:43,655 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 17:33:43,656 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 17:33:43,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:33:43,657 INFO L82 PathProgramCache]: Analyzing trace with hash -700771228, now seen corresponding path program 12 times [2021-10-08 17:33:43,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:33:43,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [160218164] [2021-10-08 17:33:43,658 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:33:43,658 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:33:43,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:33:43,659 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 17:33:43,661 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 17:33:43,832 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 17:33:43,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:33:43,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 17:33:43,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:33:43,935 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:43,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:33:44,205 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 17:33:44,205 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:33:44,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [160218164] [2021-10-08 17:33:44,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [160218164] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:33:44,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:33:44,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2021-10-08 17:33:44,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6980616] [2021-10-08 17:33:44,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 17:33:44,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:33:44,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 17:33:44,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-10-08 17:33:44,208 INFO L87 Difference]: Start difference. First operand 194 states and 551 transitions. Second operand has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 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 17:33:46,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:33:46,024 INFO L93 Difference]: Finished difference Result 284 states and 728 transitions. [2021-10-08 17:33:46,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-08 17:33:46,025 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 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 17:33:46,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:33:46,027 INFO L225 Difference]: With dead ends: 284 [2021-10-08 17:33:46,027 INFO L226 Difference]: Without dead ends: 282 [2021-10-08 17:33:46,028 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1016.0ms TimeCoverageRelationStatistics Valid=157, Invalid=599, Unknown=0, NotChecked=0, Total=756 [2021-10-08 17:33:46,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-10-08 17:33:46,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 210. [2021-10-08 17:33:46,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 2.8564593301435406) internal successors, (597), 209 states have internal predecessors, (597), 0 states have call successors, (0), 0 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 17:33:46,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 597 transitions. [2021-10-08 17:33:46,038 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 597 transitions. Word has length 17 [2021-10-08 17:33:46,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:33:46,038 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 597 transitions. [2021-10-08 17:33:46,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 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 17:33:46,038 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 597 transitions. [2021-10-08 17:33:46,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:33:46,040 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:33:46,040 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:33:46,052 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 17:33:46,252 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 17:33:46,252 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 17:33:46,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:33:46,253 INFO L82 PathProgramCache]: Analyzing trace with hash 2008176862, now seen corresponding path program 13 times [2021-10-08 17:33:46,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:33:46,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1346743676] [2021-10-08 17:33:46,254 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:33:46,254 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:33:46,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:33:46,256 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 17:33:46,257 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 17:33:46,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:33:46,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:33:46,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:33:46,570 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:46,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:33:46,817 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:46,818 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:33:46,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1346743676] [2021-10-08 17:33:46,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1346743676] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:33:46,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:33:46,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-08 17:33:46,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284719722] [2021-10-08 17:33:46,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 17:33:46,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:33:46,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 17:33:46,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:33:46,820 INFO L87 Difference]: Start difference. First operand 210 states and 597 transitions. Second operand has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 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 17:33:49,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:33:49,707 INFO L93 Difference]: Finished difference Result 446 states and 1113 transitions. [2021-10-08 17:33:49,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-08 17:33:49,708 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 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 17:33:49,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:33:49,712 INFO L225 Difference]: With dead ends: 446 [2021-10-08 17:33:49,712 INFO L226 Difference]: Without dead ends: 432 [2021-10-08 17:33:49,713 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 1665.8ms TimeCoverageRelationStatistics Valid=363, Invalid=1277, Unknown=0, NotChecked=0, Total=1640 [2021-10-08 17:33:49,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-10-08 17:33:49,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 232. [2021-10-08 17:33:49,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 2.9004329004329006) internal successors, (670), 231 states have internal predecessors, (670), 0 states have call successors, (0), 0 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 17:33:49,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 670 transitions. [2021-10-08 17:33:49,725 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 670 transitions. Word has length 18 [2021-10-08 17:33:49,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:33:49,725 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 670 transitions. [2021-10-08 17:33:49,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 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 17:33:49,725 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 670 transitions. [2021-10-08 17:33:49,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:33:49,727 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:33:49,727 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:33:49,739 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 17:33:49,939 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 17:33:49,939 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 17:33:49,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:33:49,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1147518394, now seen corresponding path program 14 times [2021-10-08 17:33:49,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:33:49,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1007261584] [2021-10-08 17:33:49,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:33:49,941 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:33:49,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:33:49,942 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 17:33:49,943 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 17:33:50,127 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:33:50,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:33:50,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 17:33:50,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:33:50,250 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:50,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:33:50,531 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:50,531 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:33:50,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1007261584] [2021-10-08 17:33:50,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1007261584] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:33:50,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:33:50,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2021-10-08 17:33:50,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048404174] [2021-10-08 17:33:50,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-08 17:33:50,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:33:50,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-08 17:33:50,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-10-08 17:33:50,534 INFO L87 Difference]: Start difference. First operand 232 states and 670 transitions. Second operand has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 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 17:33:53,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:33:53,213 INFO L93 Difference]: Finished difference Result 436 states and 1050 transitions. [2021-10-08 17:33:53,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-08 17:33:53,214 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 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 18 [2021-10-08 17:33:53,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:33:53,218 INFO L225 Difference]: With dead ends: 436 [2021-10-08 17:33:53,218 INFO L226 Difference]: Without dead ends: 424 [2021-10-08 17:33:53,219 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 1801.3ms TimeCoverageRelationStatistics Valid=273, Invalid=783, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 17:33:53,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-10-08 17:33:53,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 146. [2021-10-08 17:33:53,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 2.613793103448276) internal successors, (379), 145 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:53,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 379 transitions. [2021-10-08 17:33:53,236 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 379 transitions. Word has length 18 [2021-10-08 17:33:53,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:33:53,236 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 379 transitions. [2021-10-08 17:33:53,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 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 17:33:53,237 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 379 transitions. [2021-10-08 17:33:53,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:33:53,237 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:33:53,237 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:33:53,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-08 17:33:53,438 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 17:33:53,438 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 17:33:53,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:33:53,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1407907282, now seen corresponding path program 15 times [2021-10-08 17:33:53,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:33:53,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1880231410] [2021-10-08 17:33:53,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:33:53,440 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:33:53,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:33:53,442 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 17:33:53,442 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 17:33:53,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 17:33:53,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:33:53,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 17:33:53,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:33:53,856 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:53,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:33:54,358 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:54,359 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:33:54,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1880231410] [2021-10-08 17:33:54,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1880231410] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:33:54,359 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:33:54,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-08 17:33:54,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208903068] [2021-10-08 17:33:54,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 17:33:54,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:33:54,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 17:33:54,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:33:54,361 INFO L87 Difference]: Start difference. First operand 146 states and 379 transitions. Second operand has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 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 17:33:57,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:33:57,659 INFO L93 Difference]: Finished difference Result 310 states and 740 transitions. [2021-10-08 17:33:57,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-08 17:33:57,661 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 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 17:33:57,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:33:57,663 INFO L225 Difference]: With dead ends: 310 [2021-10-08 17:33:57,663 INFO L226 Difference]: Without dead ends: 310 [2021-10-08 17:33:57,665 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 2783.5ms TimeCoverageRelationStatistics Valid=439, Invalid=1367, Unknown=0, NotChecked=0, Total=1806 [2021-10-08 17:33:57,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2021-10-08 17:33:57,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 192. [2021-10-08 17:33:57,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 2.602094240837696) internal successors, (497), 191 states have internal predecessors, (497), 0 states have call successors, (0), 0 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 17:33:57,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 497 transitions. [2021-10-08 17:33:57,674 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 497 transitions. Word has length 18 [2021-10-08 17:33:57,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:33:57,674 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 497 transitions. [2021-10-08 17:33:57,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 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 17:33:57,675 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 497 transitions. [2021-10-08 17:33:57,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:33:57,675 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:33:57,676 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:33:57,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-08 17:33:57,888 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 17:33:57,889 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 17:33:57,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:33:57,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1776410108, now seen corresponding path program 16 times [2021-10-08 17:33:57,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:33:57,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [509930747] [2021-10-08 17:33:57,891 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:33:57,891 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:33:57,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:33:57,892 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 17:33:57,904 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 17:33:58,092 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:33:58,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:33:58,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 17:33:58,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:33:58,261 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:58,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:33:58,601 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:58,602 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:33:58,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [509930747] [2021-10-08 17:33:58,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [509930747] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:33:58,602 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:33:58,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-08 17:33:58,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106986017] [2021-10-08 17:33:58,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 17:33:58,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:33:58,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 17:33:58,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:33:58,604 INFO L87 Difference]: Start difference. First operand 192 states and 497 transitions. Second operand has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 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 17:34:01,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:34:01,547 INFO L93 Difference]: Finished difference Result 462 states and 1076 transitions. [2021-10-08 17:34:01,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-08 17:34:01,548 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 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 18 [2021-10-08 17:34:01,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:34:01,551 INFO L225 Difference]: With dead ends: 462 [2021-10-08 17:34:01,551 INFO L226 Difference]: Without dead ends: 426 [2021-10-08 17:34:01,552 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 2346.9ms TimeCoverageRelationStatistics Valid=248, Invalid=808, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 17:34:01,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2021-10-08 17:34:01,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 236. [2021-10-08 17:34:01,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 2.6595744680851063) internal successors, (625), 235 states have internal predecessors, (625), 0 states have call successors, (0), 0 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 17:34:01,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 625 transitions. [2021-10-08 17:34:01,563 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 625 transitions. Word has length 18 [2021-10-08 17:34:01,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:34:01,563 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 625 transitions. [2021-10-08 17:34:01,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 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 17:34:01,563 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 625 transitions. [2021-10-08 17:34:01,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:34:01,565 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:34:01,565 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:34:01,583 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 17:34:01,777 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 17:34:01,778 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 17:34:01,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:34:01,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1445471808, now seen corresponding path program 17 times [2021-10-08 17:34:01,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:34:01,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1560910125] [2021-10-08 17:34:01,779 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:34:01,780 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:34:01,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:34:01,782 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 17:34:01,784 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 17:34:01,985 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 17:34:01,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:34:01,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 17:34:01,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:34:02,171 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:34:02,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:34:02,745 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:34:02,745 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:34:02,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1560910125] [2021-10-08 17:34:02,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1560910125] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:34:02,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:34:02,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-08 17:34:02,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059650353] [2021-10-08 17:34:02,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 17:34:02,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:34:02,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 17:34:02,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:34:02,748 INFO L87 Difference]: Start difference. First operand 236 states and 625 transitions. Second operand has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 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 17:34:09,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:34:09,302 INFO L93 Difference]: Finished difference Result 512 states and 1210 transitions. [2021-10-08 17:34:09,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-08 17:34:09,303 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 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 18 [2021-10-08 17:34:09,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:34:09,307 INFO L225 Difference]: With dead ends: 512 [2021-10-08 17:34:09,308 INFO L226 Difference]: Without dead ends: 488 [2021-10-08 17:34:09,308 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 5133.3ms TimeCoverageRelationStatistics Valid=362, Invalid=1198, Unknown=0, NotChecked=0, Total=1560 [2021-10-08 17:34:09,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-10-08 17:34:09,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 274. [2021-10-08 17:34:09,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 2.7326007326007327) internal successors, (746), 273 states have internal predecessors, (746), 0 states have call successors, (0), 0 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 17:34:09,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 746 transitions. [2021-10-08 17:34:09,321 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 746 transitions. Word has length 18 [2021-10-08 17:34:09,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:34:09,321 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 746 transitions. [2021-10-08 17:34:09,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 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 17:34:09,322 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 746 transitions. [2021-10-08 17:34:09,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:34:09,323 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:34:09,323 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:34:09,336 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 17:34:09,535 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 17:34:09,536 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 17:34:09,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:34:09,537 INFO L82 PathProgramCache]: Analyzing trace with hash 653763352, now seen corresponding path program 18 times [2021-10-08 17:34:09,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:34:09,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1786022837] [2021-10-08 17:34:09,538 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:34:09,538 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:34:09,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:34:09,541 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 17:34:09,559 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 17:34:09,791 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 17:34:09,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:34:09,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 17:34:09,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:34:09,963 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:34:09,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:34:10,238 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:34:10,239 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:34:10,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1786022837] [2021-10-08 17:34:10,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1786022837] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:34:10,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:34:10,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-08 17:34:10,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198930499] [2021-10-08 17:34:10,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 17:34:10,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:34:10,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 17:34:10,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:34:10,242 INFO L87 Difference]: Start difference. First operand 274 states and 746 transitions. Second operand has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 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 17:34:13,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:34:13,835 INFO L93 Difference]: Finished difference Result 740 states and 1781 transitions. [2021-10-08 17:34:13,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-08 17:34:13,836 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 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 18 [2021-10-08 17:34:13,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:34:13,840 INFO L225 Difference]: With dead ends: 740 [2021-10-08 17:34:13,840 INFO L226 Difference]: Without dead ends: 704 [2021-10-08 17:34:13,841 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 2559.4ms TimeCoverageRelationStatistics Valid=355, Invalid=1205, Unknown=0, NotChecked=0, Total=1560 [2021-10-08 17:34:13,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2021-10-08 17:34:13,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 338. [2021-10-08 17:34:13,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 337 states have (on average 2.85459940652819) internal successors, (962), 337 states have internal predecessors, (962), 0 states have call successors, (0), 0 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 17:34:13,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 962 transitions. [2021-10-08 17:34:13,859 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 962 transitions. Word has length 18 [2021-10-08 17:34:13,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:34:13,859 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 962 transitions. [2021-10-08 17:34:13,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 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 17:34:13,859 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 962 transitions. [2021-10-08 17:34:13,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:34:13,861 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:34:13,861 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:34:13,878 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2021-10-08 17:34:14,074 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 17:34:14,075 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 17:34:14,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:34:14,076 INFO L82 PathProgramCache]: Analyzing trace with hash -831940292, now seen corresponding path program 19 times [2021-10-08 17:34:14,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:34:14,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [652783569] [2021-10-08 17:34:14,077 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:34:14,077 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:34:14,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:34:14,078 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 17:34:14,079 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 17:34:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:34:14,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:34:14,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:34:14,405 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:34:14,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:34:14,632 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:34:14,633 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:34:14,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [652783569] [2021-10-08 17:34:14,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [652783569] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:34:14,633 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:34:14,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-08 17:34:14,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812138969] [2021-10-08 17:34:14,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 17:34:14,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:34:14,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 17:34:14,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:34:14,635 INFO L87 Difference]: Start difference. First operand 338 states and 962 transitions. Second operand has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 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 17:34:17,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:34:17,569 INFO L93 Difference]: Finished difference Result 744 states and 1868 transitions. [2021-10-08 17:34:17,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-08 17:34:17,570 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 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 17:34:17,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:34:17,574 INFO L225 Difference]: With dead ends: 744 [2021-10-08 17:34:17,574 INFO L226 Difference]: Without dead ends: 734 [2021-10-08 17:34:17,575 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 1847.4ms TimeCoverageRelationStatistics Valid=321, Invalid=1161, Unknown=0, NotChecked=0, Total=1482 [2021-10-08 17:34:17,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2021-10-08 17:34:17,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 368. [2021-10-08 17:34:17,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 367 states have (on average 2.9346049046321525) internal successors, (1077), 367 states have internal predecessors, (1077), 0 states have call successors, (0), 0 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 17:34:17,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 1077 transitions. [2021-10-08 17:34:17,592 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 1077 transitions. Word has length 18 [2021-10-08 17:34:17,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:34:17,593 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 1077 transitions. [2021-10-08 17:34:17,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 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 17:34:17,593 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 1077 transitions. [2021-10-08 17:34:17,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:34:17,594 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:34:17,594 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:34:17,607 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 17:34:17,807 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 17:34:17,807 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 17:34:17,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:34:17,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1692598760, now seen corresponding path program 20 times [2021-10-08 17:34:17,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:34:17,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [627689492] [2021-10-08 17:34:17,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:34:17,809 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:34:17,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:34:17,810 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 17:34:17,811 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 17:34:18,045 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:34:18,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:34:18,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 17:34:18,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:34:18,167 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:34:18,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:34:18,426 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:34:18,426 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:34:18,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [627689492] [2021-10-08 17:34:18,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [627689492] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:34:18,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:34:18,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2021-10-08 17:34:18,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099857682] [2021-10-08 17:34:18,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-08 17:34:18,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:34:18,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-08 17:34:18,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-10-08 17:34:18,428 INFO L87 Difference]: Start difference. First operand 368 states and 1077 transitions. Second operand has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 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 17:34:21,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:34:21,271 INFO L93 Difference]: Finished difference Result 778 states and 1939 transitions. [2021-10-08 17:34:21,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 17:34:21,272 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 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 17:34:21,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:34:21,276 INFO L225 Difference]: With dead ends: 778 [2021-10-08 17:34:21,276 INFO L226 Difference]: Without dead ends: 762 [2021-10-08 17:34:21,277 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1795.2ms TimeCoverageRelationStatistics Valid=263, Invalid=793, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 17:34:21,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2021-10-08 17:34:21,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 294. [2021-10-08 17:34:21,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 2.795221843003413) internal successors, (819), 293 states have internal predecessors, (819), 0 states have call successors, (0), 0 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 17:34:21,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 819 transitions. [2021-10-08 17:34:21,292 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 819 transitions. Word has length 18 [2021-10-08 17:34:21,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:34:21,292 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 819 transitions. [2021-10-08 17:34:21,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 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 17:34:21,293 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 819 transitions. [2021-10-08 17:34:21,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:34:21,294 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:34:21,294 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:34:21,309 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 17:34:21,507 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 17:34:21,507 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 17:34:21,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:34:21,508 INFO L82 PathProgramCache]: Analyzing trace with hash 18014548, now seen corresponding path program 21 times [2021-10-08 17:34:21,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:34:21,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [186384560] [2021-10-08 17:34:21,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:34:21,509 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:34:21,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:34:21,510 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 17:34:21,511 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 17:34:21,763 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 17:34:21,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:34:21,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 17:34:21,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:34:21,891 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:34:21,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:34:22,157 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:34:22,157 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:34:22,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [186384560] [2021-10-08 17:34:22,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [186384560] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:34:22,158 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:34:22,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2021-10-08 17:34:22,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850524512] [2021-10-08 17:34:22,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-08 17:34:22,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:34:22,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-08 17:34:22,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-10-08 17:34:22,160 INFO L87 Difference]: Start difference. First operand 294 states and 819 transitions. Second operand has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 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 17:34:24,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:34:24,815 INFO L93 Difference]: Finished difference Result 548 states and 1375 transitions. [2021-10-08 17:34:24,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 17:34:24,815 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 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 17:34:24,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:34:24,819 INFO L225 Difference]: With dead ends: 548 [2021-10-08 17:34:24,819 INFO L226 Difference]: Without dead ends: 538 [2021-10-08 17:34:24,820 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1811.6ms TimeCoverageRelationStatistics Valid=236, Invalid=694, Unknown=0, NotChecked=0, Total=930 [2021-10-08 17:34:24,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-10-08 17:34:24,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 322. [2021-10-08 17:34:24,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 321 states have (on average 2.844236760124611) internal successors, (913), 321 states have internal predecessors, (913), 0 states have call successors, (0), 0 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 17:34:24,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 913 transitions. [2021-10-08 17:34:24,832 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 913 transitions. Word has length 18 [2021-10-08 17:34:24,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:34:24,833 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 913 transitions. [2021-10-08 17:34:24,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 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 17:34:24,833 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 913 transitions. [2021-10-08 17:34:24,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:34:24,834 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:34:24,834 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:34:24,849 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 17:34:25,047 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 17:34:25,047 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 17:34:25,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:34:25,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1432209872, now seen corresponding path program 22 times [2021-10-08 17:34:25,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:34:25,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1509563223] [2021-10-08 17:34:25,049 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:34:25,049 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:34:25,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:34:25,051 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 17:34:25,051 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 17:34:25,265 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:34:25,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:34:25,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 17:34:25,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:34:25,421 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:34:25,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:34:25,708 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:34:25,709 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:34:25,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1509563223] [2021-10-08 17:34:25,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1509563223] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:34:25,709 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:34:25,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-08 17:34:25,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381191993] [2021-10-08 17:34:25,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 17:34:25,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:34:25,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 17:34:25,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:34:25,711 INFO L87 Difference]: Start difference. First operand 322 states and 913 transitions. Second operand has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 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 17:34:28,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:34:28,337 INFO L93 Difference]: Finished difference Result 722 states and 1793 transitions. [2021-10-08 17:34:28,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-08 17:34:28,338 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 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 18 [2021-10-08 17:34:28,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:34:28,341 INFO L225 Difference]: With dead ends: 722 [2021-10-08 17:34:28,341 INFO L226 Difference]: Without dead ends: 722 [2021-10-08 17:34:28,342 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 1832.9ms TimeCoverageRelationStatistics Valid=421, Invalid=1471, Unknown=0, NotChecked=0, Total=1892 [2021-10-08 17:34:28,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2021-10-08 17:34:28,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 356. [2021-10-08 17:34:28,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 355 states have (on average 2.8901408450704227) internal successors, (1026), 355 states have internal predecessors, (1026), 0 states have call successors, (0), 0 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 17:34:28,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 1026 transitions. [2021-10-08 17:34:28,356 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 1026 transitions. Word has length 18 [2021-10-08 17:34:28,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:34:28,356 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 1026 transitions. [2021-10-08 17:34:28,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 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 17:34:28,357 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 1026 transitions. [2021-10-08 17:34:28,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:34:28,358 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:34:28,358 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:34:28,372 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 17:34:28,571 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 17:34:28,572 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 17:34:28,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:34:28,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1030642264, now seen corresponding path program 23 times [2021-10-08 17:34:28,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:34:28,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1690036231] [2021-10-08 17:34:28,574 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:34:28,574 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:34:28,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:34:28,576 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 17:34:28,577 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 17:34:28,793 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 17:34:28,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:34:28,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 17:34:28,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:34:29,114 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:34:29,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:34:29,415 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:34:29,415 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:34:29,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1690036231] [2021-10-08 17:34:29,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1690036231] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:34:29,416 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:34:29,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-08 17:34:29,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123977874] [2021-10-08 17:34:29,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 17:34:29,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:34:29,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 17:34:29,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-10-08 17:34:29,418 INFO L87 Difference]: Start difference. First operand 356 states and 1026 transitions. Second operand has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 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 17:34:30,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:34:30,930 INFO L93 Difference]: Finished difference Result 532 states and 1544 transitions. [2021-10-08 17:34:30,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 17:34:30,931 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 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 17:34:30,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:34:30,936 INFO L225 Difference]: With dead ends: 532 [2021-10-08 17:34:30,936 INFO L226 Difference]: Without dead ends: 528 [2021-10-08 17:34:30,936 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1299.2ms TimeCoverageRelationStatistics Valid=233, Invalid=417, Unknown=0, NotChecked=0, Total=650 [2021-10-08 17:34:30,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-10-08 17:34:30,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 382. [2021-10-08 17:34:30,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 2.952755905511811) internal successors, (1125), 381 states have internal predecessors, (1125), 0 states have call successors, (0), 0 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 17:34:30,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1125 transitions. [2021-10-08 17:34:30,950 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1125 transitions. Word has length 18 [2021-10-08 17:34:30,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:34:30,950 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 1125 transitions. [2021-10-08 17:34:30,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 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 17:34:30,951 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1125 transitions. [2021-10-08 17:34:30,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:34:30,952 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:34:30,952 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:34:30,966 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 17:34:31,165 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 17:34:31,165 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 17:34:31,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:34:31,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1891300732, now seen corresponding path program 24 times [2021-10-08 17:34:31,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:34:31,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1288788273] [2021-10-08 17:34:31,167 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:34:31,167 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:34:31,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:34:31,170 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 17:34:31,193 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 17:34:31,409 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-08 17:34:31,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:34:31,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 17:34:31,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:34:31,532 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:34:31,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:34:31,947 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:34:31,948 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:34:31,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1288788273] [2021-10-08 17:34:31,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1288788273] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:34:31,948 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:34:31,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2021-10-08 17:34:31,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660758311] [2021-10-08 17:34:31,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-08 17:34:31,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:34:31,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-08 17:34:31,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-10-08 17:34:31,950 INFO L87 Difference]: Start difference. First operand 382 states and 1125 transitions. Second operand has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 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 17:34:35,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:34:35,100 INFO L93 Difference]: Finished difference Result 774 states and 2006 transitions. [2021-10-08 17:34:35,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-08 17:34:35,102 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 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 17:34:35,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:34:35,110 INFO L225 Difference]: With dead ends: 774 [2021-10-08 17:34:35,110 INFO L226 Difference]: Without dead ends: 766 [2021-10-08 17:34:35,111 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 2908.3ms TimeCoverageRelationStatistics Valid=332, Invalid=1228, Unknown=0, NotChecked=0, Total=1560 [2021-10-08 17:34:35,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2021-10-08 17:34:35,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 394. [2021-10-08 17:34:35,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 2.959287531806616) internal successors, (1163), 393 states have internal predecessors, (1163), 0 states have call successors, (0), 0 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 17:34:35,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1163 transitions. [2021-10-08 17:34:35,129 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1163 transitions. Word has length 18 [2021-10-08 17:34:35,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:34:35,129 INFO L470 AbstractCegarLoop]: Abstraction has 394 states and 1163 transitions. [2021-10-08 17:34:35,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 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 17:34:35,129 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1163 transitions. [2021-10-08 17:34:35,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:34:35,131 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:34:35,131 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:34:35,145 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 17:34:35,344 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 17:34:35,345 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 17:34:35,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:34:35,346 INFO L82 PathProgramCache]: Analyzing trace with hash -618024000, now seen corresponding path program 25 times [2021-10-08 17:34:35,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:34:35,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1713110593] [2021-10-08 17:34:35,347 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:34:35,348 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:34:35,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:34:35,349 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 17:34:35,350 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 17:34:35,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:34:35,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 17:34:35,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:34:35,737 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:34:35,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:34:35,984 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:34:35,984 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:34:35,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1713110593] [2021-10-08 17:34:35,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1713110593] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:34:35,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:34:35,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-08 17:34:35,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831587338] [2021-10-08 17:34:35,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 17:34:35,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:34:35,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 17:34:35,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:34:35,987 INFO L87 Difference]: Start difference. First operand 394 states and 1163 transitions. Second operand has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 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 17:34:38,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:34:38,848 INFO L93 Difference]: Finished difference Result 770 states and 2026 transitions. [2021-10-08 17:34:38,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-08 17:34:38,849 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 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 18 [2021-10-08 17:34:38,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:34:38,853 INFO L225 Difference]: With dead ends: 770 [2021-10-08 17:34:38,853 INFO L226 Difference]: Without dead ends: 742 [2021-10-08 17:34:38,854 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 1564.4ms TimeCoverageRelationStatistics Valid=374, Invalid=1186, Unknown=0, NotChecked=0, Total=1560 [2021-10-08 17:34:38,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2021-10-08 17:34:38,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 382. [2021-10-08 17:34:38,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 2.8897637795275593) internal successors, (1101), 381 states have internal predecessors, (1101), 0 states have call successors, (0), 0 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 17:34:38,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1101 transitions. [2021-10-08 17:34:38,869 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1101 transitions. Word has length 18 [2021-10-08 17:34:38,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:34:38,869 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 1101 transitions. [2021-10-08 17:34:38,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 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 17:34:38,869 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1101 transitions. [2021-10-08 17:34:38,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:34:38,871 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:34:38,871 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:34:38,885 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 17:34:39,083 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 17:34:39,084 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 17:34:39,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:34:39,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1630911844, now seen corresponding path program 26 times [2021-10-08 17:34:39,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:34:39,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [136179557] [2021-10-08 17:34:39,086 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:34:39,087 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:34:39,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:34:39,088 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 17:34:39,091 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 17:34:39,350 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:34:39,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:34:39,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 17:34:39,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:34:39,507 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:34:39,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:34:39,781 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:34:39,782 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:34:39,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [136179557] [2021-10-08 17:34:39,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [136179557] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:34:39,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:34:39,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-08 17:34:39,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179543490] [2021-10-08 17:34:39,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 17:34:39,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:34:39,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 17:34:39,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:34:39,785 INFO L87 Difference]: Start difference. First operand 382 states and 1101 transitions. Second operand has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 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 17:34:41,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:34:41,774 INFO L93 Difference]: Finished difference Result 758 states and 2004 transitions. [2021-10-08 17:34:41,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-08 17:34:41,775 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 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 18 [2021-10-08 17:34:41,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:34:41,778 INFO L225 Difference]: With dead ends: 758 [2021-10-08 17:34:41,778 INFO L226 Difference]: Without dead ends: 758 [2021-10-08 17:34:41,779 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 1615.2ms TimeCoverageRelationStatistics Valid=426, Invalid=1466, Unknown=0, NotChecked=0, Total=1892 [2021-10-08 17:34:41,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2021-10-08 17:34:41,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 388. [2021-10-08 17:34:41,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 2.8940568475452197) internal successors, (1120), 387 states have internal predecessors, (1120), 0 states have call successors, (0), 0 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 17:34:41,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1120 transitions. [2021-10-08 17:34:41,791 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1120 transitions. Word has length 18 [2021-10-08 17:34:41,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:34:41,792 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 1120 transitions. [2021-10-08 17:34:41,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 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 17:34:41,792 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1120 transitions. [2021-10-08 17:34:41,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:34:41,793 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:34:41,793 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:34:41,806 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 17:34:42,006 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 17:34:42,007 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 17:34:42,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:34:42,008 INFO L82 PathProgramCache]: Analyzing trace with hash -528942928, now seen corresponding path program 27 times [2021-10-08 17:34:42,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:34:42,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1830945798] [2021-10-08 17:34:42,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:34:42,009 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:34:42,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:34:42,010 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 17:34:42,017 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 17:34:42,292 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 17:34:42,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:34:42,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 17:34:42,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:34:42,489 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:34:42,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:34:42,867 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:34:42,867 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:34:42,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1830945798] [2021-10-08 17:34:42,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1830945798] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:34:42,868 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:34:42,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2021-10-08 17:34:42,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26583678] [2021-10-08 17:34:42,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-08 17:34:42,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:34:42,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-08 17:34:42,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-10-08 17:34:42,870 INFO L87 Difference]: Start difference. First operand 388 states and 1120 transitions. Second operand has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 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 17:34:44,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:34:44,353 INFO L93 Difference]: Finished difference Result 560 states and 1495 transitions. [2021-10-08 17:34:44,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-08 17:34:44,354 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 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 18 [2021-10-08 17:34:44,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:34:44,357 INFO L225 Difference]: With dead ends: 560 [2021-10-08 17:34:44,357 INFO L226 Difference]: Without dead ends: 560 [2021-10-08 17:34:44,358 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1369.6ms TimeCoverageRelationStatistics Valid=268, Invalid=854, Unknown=0, NotChecked=0, Total=1122 [2021-10-08 17:34:44,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-10-08 17:34:44,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 384. [2021-10-08 17:34:44,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 2.882506527415144) internal successors, (1104), 383 states have internal predecessors, (1104), 0 states have call successors, (0), 0 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 17:34:44,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1104 transitions. [2021-10-08 17:34:44,370 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1104 transitions. Word has length 18 [2021-10-08 17:34:44,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:34:44,370 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 1104 transitions. [2021-10-08 17:34:44,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 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 17:34:44,371 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1104 transitions. [2021-10-08 17:34:44,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 17:34:44,372 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:34:44,372 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:34:44,385 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 17:34:44,585 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 17:34:44,585 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 17:34:44,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:34:44,586 INFO L82 PathProgramCache]: Analyzing trace with hash 708029038, now seen corresponding path program 28 times [2021-10-08 17:34:44,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:34:44,587 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [265575408] [2021-10-08 17:34:44,587 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:34:44,587 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:34:44,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:34:44,588 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 17:34:44,589 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 17:34:44,919 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:34:44,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:34:44,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 17:34:44,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:34:45,201 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:34:45,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:34:45,714 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:34:45,714 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:34:45,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [265575408] [2021-10-08 17:34:45,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [265575408] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:34:45,715 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:34:45,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 13 [2021-10-08 17:34:45,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833968735] [2021-10-08 17:34:45,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 17:34:45,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:34:45,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 17:34:45,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-10-08 17:34:45,716 INFO L87 Difference]: Start difference. First operand 384 states and 1104 transitions. Second operand has 15 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 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 17:34:46,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:34:46,314 INFO L93 Difference]: Finished difference Result 575 states and 1597 transitions. [2021-10-08 17:34:46,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 17:34:46,315 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 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 19 [2021-10-08 17:34:46,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:34:46,319 INFO L225 Difference]: With dead ends: 575 [2021-10-08 17:34:46,319 INFO L226 Difference]: Without dead ends: 532 [2021-10-08 17:34:46,320 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 349.2ms TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-10-08 17:34:46,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2021-10-08 17:34:46,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 448. [2021-10-08 17:34:46,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 447 states have (on average 2.9194630872483223) internal successors, (1305), 447 states have internal predecessors, (1305), 0 states have call successors, (0), 0 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 17:34:46,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 1305 transitions. [2021-10-08 17:34:46,334 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 1305 transitions. Word has length 19 [2021-10-08 17:34:46,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:34:46,335 INFO L470 AbstractCegarLoop]: Abstraction has 448 states and 1305 transitions. [2021-10-08 17:34:46,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 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 17:34:46,335 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 1305 transitions. [2021-10-08 17:34:46,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 17:34:46,336 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:34:46,336 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:34:46,350 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 17:34:46,549 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 17:34:46,550 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 17:34:46,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:34:46,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1092699442, now seen corresponding path program 29 times [2021-10-08 17:34:46,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:34:46,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [224353671] [2021-10-08 17:34:46,552 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:34:46,552 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:34:46,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:34:46,554 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 17:34:46,555 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 17:34:46,839 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-08 17:34:46,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:34:46,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 17:34:46,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:34:47,042 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:34:47,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:34:47,453 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:34:47,453 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:34:47,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [224353671] [2021-10-08 17:34:47,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [224353671] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:34:47,454 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:34:47,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-10-08 17:34:47,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891259079] [2021-10-08 17:34:47,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 17:34:47,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:34:47,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 17:34:47,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:34:47,456 INFO L87 Difference]: Start difference. First operand 448 states and 1305 transitions. Second operand has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 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 17:34:49,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:34:49,991 INFO L93 Difference]: Finished difference Result 640 states and 1749 transitions. [2021-10-08 17:34:49,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-08 17:34:49,992 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 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 19 [2021-10-08 17:34:49,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:34:49,997 INFO L225 Difference]: With dead ends: 640 [2021-10-08 17:34:49,997 INFO L226 Difference]: Without dead ends: 632 [2021-10-08 17:34:49,998 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 2255.2ms TimeCoverageRelationStatistics Valid=378, Invalid=1262, Unknown=0, NotChecked=0, Total=1640 [2021-10-08 17:34:49,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-10-08 17:34:50,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 470. [2021-10-08 17:34:50,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 469 states have (on average 2.9509594882729213) internal successors, (1384), 469 states have internal predecessors, (1384), 0 states have call successors, (0), 0 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 17:34:50,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 1384 transitions. [2021-10-08 17:34:50,014 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 1384 transitions. Word has length 19 [2021-10-08 17:34:50,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:34:50,015 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 1384 transitions. [2021-10-08 17:34:50,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 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 17:34:50,015 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 1384 transitions. [2021-10-08 17:34:50,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:34:50,017 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:34:50,017 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:34:50,032 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 17:34:50,230 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 17:34:50,231 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 17:34:50,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:34:50,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1910088004, now seen corresponding path program 30 times [2021-10-08 17:34:50,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:34:50,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [89893297] [2021-10-08 17:34:50,232 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:34:50,233 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:34:50,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:34:50,234 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 17:34:50,236 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 17:34:50,552 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 17:34:50,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:34:50,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 17:34:50,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:34:50,759 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:34:50,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:34:51,307 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:34:51,307 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:34:51,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [89893297] [2021-10-08 17:34:51,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [89893297] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:34:51,308 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:34:51,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-08 17:34:51,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326661199] [2021-10-08 17:34:51,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:34:51,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:34:51,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:34:51,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:34:51,310 INFO L87 Difference]: Start difference. First operand 470 states and 1384 transitions. Second operand has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 17:34:58,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:34:58,122 INFO L93 Difference]: Finished difference Result 900 states and 2331 transitions. [2021-10-08 17:34:58,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-08 17:34:58,124 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 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 20 [2021-10-08 17:34:58,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:34:58,130 INFO L225 Difference]: With dead ends: 900 [2021-10-08 17:34:58,130 INFO L226 Difference]: Without dead ends: 864 [2021-10-08 17:34:58,131 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 5680.9ms TimeCoverageRelationStatistics Valid=541, Invalid=1909, Unknown=0, NotChecked=0, Total=2450 [2021-10-08 17:34:58,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2021-10-08 17:34:58,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 516. [2021-10-08 17:34:58,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 515 states have (on average 2.9728155339805826) internal successors, (1531), 515 states have internal predecessors, (1531), 0 states have call successors, (0), 0 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 17:34:58,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 1531 transitions. [2021-10-08 17:34:58,157 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 1531 transitions. Word has length 20 [2021-10-08 17:34:58,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:34:58,157 INFO L470 AbstractCegarLoop]: Abstraction has 516 states and 1531 transitions. [2021-10-08 17:34:58,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 17:34:58,157 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 1531 transitions. [2021-10-08 17:34:58,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:34:58,159 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:34:58,159 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:34:58,177 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 17:34:58,373 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 17:34:58,374 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 17:34:58,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:34:58,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1311793912, now seen corresponding path program 31 times [2021-10-08 17:34:58,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:34:58,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [807779119] [2021-10-08 17:34:58,375 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:34:58,376 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:34:58,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:34:58,377 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 17:34:58,378 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 17:34:58,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:34:58,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 17:34:58,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:34:58,921 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:34:58,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:34:59,937 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:34:59,938 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:34:59,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [807779119] [2021-10-08 17:34:59,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [807779119] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:34:59,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:34:59,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-08 17:34:59,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55100112] [2021-10-08 17:34:59,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:34:59,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:34:59,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:34:59,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:34:59,940 INFO L87 Difference]: Start difference. First operand 516 states and 1531 transitions. Second operand has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 17:35:16,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:35:16,663 INFO L93 Difference]: Finished difference Result 894 states and 2371 transitions. [2021-10-08 17:35:16,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-08 17:35:16,664 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 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 20 [2021-10-08 17:35:16,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:35:16,669 INFO L225 Difference]: With dead ends: 894 [2021-10-08 17:35:16,669 INFO L226 Difference]: Without dead ends: 866 [2021-10-08 17:35:16,670 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 773 ImplicationChecksByTransitivity, 15295.2ms TimeCoverageRelationStatistics Valid=706, Invalid=2716, Unknown=0, NotChecked=0, Total=3422 [2021-10-08 17:35:16,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2021-10-08 17:35:16,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 568. [2021-10-08 17:35:16,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 567 states have (on average 2.982363315696649) internal successors, (1691), 567 states have internal predecessors, (1691), 0 states have call successors, (0), 0 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 17:35:16,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 1691 transitions. [2021-10-08 17:35:16,687 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 1691 transitions. Word has length 20 [2021-10-08 17:35:16,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:35:16,687 INFO L470 AbstractCegarLoop]: Abstraction has 568 states and 1691 transitions. [2021-10-08 17:35:16,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 17:35:16,687 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 1691 transitions. [2021-10-08 17:35:16,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:35:16,689 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:35:16,689 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:35:16,702 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 17:35:16,902 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 17:35:16,903 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 17:35:16,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:35:16,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1493768388, now seen corresponding path program 32 times [2021-10-08 17:35:16,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:35:16,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [167091757] [2021-10-08 17:35:16,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:35:16,905 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:35:16,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:35:16,907 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 17:35:16,917 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 17:35:17,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:35:17,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:35:17,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 17:35:17,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:35:17,451 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:35:17,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:35:18,487 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:35:18,487 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:35:18,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [167091757] [2021-10-08 17:35:18,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [167091757] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:35:18,488 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:35:18,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-08 17:35:18,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292436840] [2021-10-08 17:35:18,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:35:18,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:35:18,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:35:18,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:35:18,490 INFO L87 Difference]: Start difference. First operand 568 states and 1691 transitions. Second operand has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 17:35:38,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:35:38,353 INFO L93 Difference]: Finished difference Result 1220 states and 3145 transitions. [2021-10-08 17:35:38,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-10-08 17:35:38,354 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 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 20 [2021-10-08 17:35:38,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:35:38,360 INFO L225 Difference]: With dead ends: 1220 [2021-10-08 17:35:38,360 INFO L226 Difference]: Without dead ends: 1168 [2021-10-08 17:35:38,362 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1084 ImplicationChecksByTransitivity, 17730.6ms TimeCoverageRelationStatistics Valid=823, Invalid=3599, Unknown=0, NotChecked=0, Total=4422 [2021-10-08 17:35:38,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2021-10-08 17:35:38,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 628. [2021-10-08 17:35:38,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 627 states have (on average 2.9872408293460926) internal successors, (1873), 627 states have internal predecessors, (1873), 0 states have call successors, (0), 0 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 17:35:38,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 1873 transitions. [2021-10-08 17:35:38,385 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 1873 transitions. Word has length 20 [2021-10-08 17:35:38,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:35:38,385 INFO L470 AbstractCegarLoop]: Abstraction has 628 states and 1873 transitions. [2021-10-08 17:35:38,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 17:35:38,385 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 1873 transitions. [2021-10-08 17:35:38,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:35:38,387 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:35:38,387 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:35:38,401 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Ended with exit code 0 [2021-10-08 17:35:38,601 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 17:35:38,601 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 17:35:38,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:35:38,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1941980152, now seen corresponding path program 33 times [2021-10-08 17:35:38,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:35:38,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1981420124] [2021-10-08 17:35:38,603 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:35:38,603 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:35:38,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:35:38,604 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 17:35:38,612 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 17:35:38,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-08 17:35:38,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:35:38,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 17:35:38,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:35:39,190 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:35:39,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:35:40,096 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:35:40,097 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:35:40,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1981420124] [2021-10-08 17:35:40,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1981420124] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:35:40,097 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:35:40,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-08 17:35:40,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822860105] [2021-10-08 17:35:40,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:35:40,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:35:40,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:35:40,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:35:40,099 INFO L87 Difference]: Start difference. First operand 628 states and 1873 transitions. Second operand has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 17:35:52,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:35:52,847 INFO L93 Difference]: Finished difference Result 1044 states and 2828 transitions. [2021-10-08 17:35:52,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-10-08 17:35:52,849 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 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 20 [2021-10-08 17:35:52,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:35:52,855 INFO L225 Difference]: With dead ends: 1044 [2021-10-08 17:35:52,855 INFO L226 Difference]: Without dead ends: 1008 [2021-10-08 17:35:52,857 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 988 ImplicationChecksByTransitivity, 10166.6ms TimeCoverageRelationStatistics Valid=864, Invalid=3042, Unknown=0, NotChecked=0, Total=3906 [2021-10-08 17:35:52,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2021-10-08 17:35:52,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 694. [2021-10-08 17:35:52,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 693 states have (on average 2.9927849927849928) internal successors, (2074), 693 states have internal predecessors, (2074), 0 states have call successors, (0), 0 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 17:35:52,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 2074 transitions. [2021-10-08 17:35:52,885 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 2074 transitions. Word has length 20 [2021-10-08 17:35:52,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:35:52,885 INFO L470 AbstractCegarLoop]: Abstraction has 694 states and 2074 transitions. [2021-10-08 17:35:52,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 17:35:52,885 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 2074 transitions. [2021-10-08 17:35:52,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:35:52,887 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:35:52,888 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:35:52,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-10-08 17:35:53,101 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 17:35:53,102 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 17:35:53,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:35:53,102 INFO L82 PathProgramCache]: Analyzing trace with hash 868894772, now seen corresponding path program 34 times [2021-10-08 17:35:53,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:35:53,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1107467785] [2021-10-08 17:35:53,103 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:35:53,104 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:35:53,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:35:53,105 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 17:35:53,106 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 17:35:53,474 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:35:53,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:35:53,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 17:35:53,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:35:53,709 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:35:53,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:35:54,812 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:35:54,813 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:35:54,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1107467785] [2021-10-08 17:35:54,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1107467785] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:35:54,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:35:54,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-08 17:35:54,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998819596] [2021-10-08 17:35:54,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:35:54,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:35:54,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:35:54,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:35:54,815 INFO L87 Difference]: Start difference. First operand 694 states and 2074 transitions. Second operand has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 17:36:15,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:36:15,825 INFO L93 Difference]: Finished difference Result 1254 states and 3340 transitions. [2021-10-08 17:36:15,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-08 17:36:15,826 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 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 20 [2021-10-08 17:36:15,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:36:15,831 INFO L225 Difference]: With dead ends: 1254 [2021-10-08 17:36:15,831 INFO L226 Difference]: Without dead ends: 1226 [2021-10-08 17:36:15,833 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 18680.8ms TimeCoverageRelationStatistics Valid=763, Invalid=2777, Unknown=0, NotChecked=0, Total=3540 [2021-10-08 17:36:15,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2021-10-08 17:36:15,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 752. [2021-10-08 17:36:15,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 751 states have (on average 3.0319573901464714) internal successors, (2277), 751 states have internal predecessors, (2277), 0 states have call successors, (0), 0 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 17:36:15,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 2277 transitions. [2021-10-08 17:36:15,857 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 2277 transitions. Word has length 20 [2021-10-08 17:36:15,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:36:15,858 INFO L470 AbstractCegarLoop]: Abstraction has 752 states and 2277 transitions. [2021-10-08 17:36:15,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 17:36:15,858 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 2277 transitions. [2021-10-08 17:36:15,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:36:15,860 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:36:15,860 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:36:15,879 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 17:36:16,061 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 17:36:16,061 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 17:36:16,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:36:16,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1936667528, now seen corresponding path program 35 times [2021-10-08 17:36:16,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:36:16,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1417409299] [2021-10-08 17:36:16,063 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:36:16,063 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:36:16,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:36:16,064 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 17:36:16,065 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 17:36:16,419 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 17:36:16,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:36:16,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 17:36:16,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:36:16,677 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:36:16,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:36:17,846 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:36:17,847 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:36:17,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1417409299] [2021-10-08 17:36:17,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1417409299] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:36:17,847 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:36:17,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-08 17:36:17,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444913819] [2021-10-08 17:36:17,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:36:17,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:36:17,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:36:17,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:36:17,849 INFO L87 Difference]: Start difference. First operand 752 states and 2277 transitions. Second operand has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 17:36:59,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:36:59,443 INFO L93 Difference]: Finished difference Result 1534 states and 4238 transitions. [2021-10-08 17:36:59,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2021-10-08 17:36:59,444 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 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 20 [2021-10-08 17:36:59,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:36:59,448 INFO L225 Difference]: With dead ends: 1534 [2021-10-08 17:36:59,448 INFO L226 Difference]: Without dead ends: 1506 [2021-10-08 17:36:59,451 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3342 ImplicationChecksByTransitivity, 36239.7ms TimeCoverageRelationStatistics Valid=1732, Invalid=8168, Unknown=0, NotChecked=0, Total=9900 [2021-10-08 17:36:59,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2021-10-08 17:36:59,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 968. [2021-10-08 17:36:59,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 967 states have (on average 3.1240951396070322) internal successors, (3021), 967 states have internal predecessors, (3021), 0 states have call successors, (0), 0 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 17:36:59,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 3021 transitions. [2021-10-08 17:36:59,483 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 3021 transitions. Word has length 20 [2021-10-08 17:36:59,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:36:59,484 INFO L470 AbstractCegarLoop]: Abstraction has 968 states and 3021 transitions. [2021-10-08 17:36:59,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 17:36:59,484 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 3021 transitions. [2021-10-08 17:36:59,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:36:59,487 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:36:59,487 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:36:59,501 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 17:36:59,700 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 17:36:59,701 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 17:36:59,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:36:59,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1550368096, now seen corresponding path program 36 times [2021-10-08 17:36:59,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:36:59,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1900857457] [2021-10-08 17:36:59,702 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:36:59,703 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:36:59,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:36:59,704 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 17:36:59,706 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 17:37:00,106 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-08 17:37:00,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:37:00,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 17:37:00,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:37:00,279 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:37:00,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:37:01,308 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:37:01,309 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:37:01,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1900857457] [2021-10-08 17:37:01,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1900857457] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:37:01,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:37:01,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 21 [2021-10-08 17:37:01,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813257076] [2021-10-08 17:37:01,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-08 17:37:01,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:37:01,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-08 17:37:01,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2021-10-08 17:37:01,311 INFO L87 Difference]: Start difference. First operand 968 states and 3021 transitions. Second operand has 21 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 17:37:32,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:37:32,205 INFO L93 Difference]: Finished difference Result 1808 states and 5113 transitions. [2021-10-08 17:37:32,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-10-08 17:37:32,206 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 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 20 [2021-10-08 17:37:32,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:37:32,211 INFO L225 Difference]: With dead ends: 1808 [2021-10-08 17:37:32,212 INFO L226 Difference]: Without dead ends: 1806 [2021-10-08 17:37:32,213 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2132 ImplicationChecksByTransitivity, 21337.1ms TimeCoverageRelationStatistics Valid=1067, Invalid=5739, Unknown=0, NotChecked=0, Total=6806 [2021-10-08 17:37:32,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1806 states. [2021-10-08 17:37:32,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1806 to 1246. [2021-10-08 17:37:32,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1246 states, 1245 states have (on average 3.2465863453815262) internal successors, (4042), 1245 states have internal predecessors, (4042), 0 states have call successors, (0), 0 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 17:37:32,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 4042 transitions. [2021-10-08 17:37:32,251 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 4042 transitions. Word has length 20 [2021-10-08 17:37:32,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:37:32,251 INFO L470 AbstractCegarLoop]: Abstraction has 1246 states and 4042 transitions. [2021-10-08 17:37:32,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 17:37:32,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 4042 transitions. [2021-10-08 17:37:32,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:37:32,255 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:37:32,256 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:37:32,269 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Ended with exit code 0 [2021-10-08 17:37:32,469 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 17:37:32,469 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 17:37:32,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:37:32,470 INFO L82 PathProgramCache]: Analyzing trace with hash 689709628, now seen corresponding path program 37 times [2021-10-08 17:37:32,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:37:32,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1521347641] [2021-10-08 17:37:32,471 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:37:32,472 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:37:32,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:37:32,473 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 17:37:32,474 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 17:37:32,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:37:32,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 17:37:32,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:37:33,057 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:37:33,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:37:33,870 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:37:33,871 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:37:33,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1521347641] [2021-10-08 17:37:33,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1521347641] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:37:33,871 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:37:33,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-10-08 17:37:33,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481318867] [2021-10-08 17:37:33,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:37:33,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:37:33,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:37:33,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:37:33,873 INFO L87 Difference]: Start difference. First operand 1246 states and 4042 transitions. Second operand has 20 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 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 17:37:43,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:37:43,419 INFO L93 Difference]: Finished difference Result 2034 states and 6350 transitions. [2021-10-08 17:37:43,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-10-08 17:37:43,420 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 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 20 [2021-10-08 17:37:43,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:37:43,425 INFO L225 Difference]: With dead ends: 2034 [2021-10-08 17:37:43,425 INFO L226 Difference]: Without dead ends: 2022 [2021-10-08 17:37:43,426 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1238 ImplicationChecksByTransitivity, 7215.0ms TimeCoverageRelationStatistics Valid=950, Invalid=3340, Unknown=0, NotChecked=0, Total=4290 [2021-10-08 17:37:43,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2022 states. [2021-10-08 17:37:43,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2022 to 1416. [2021-10-08 17:37:43,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1415 states have (on average 3.3017667844522967) internal successors, (4672), 1415 states have internal predecessors, (4672), 0 states have call successors, (0), 0 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 17:37:43,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 4672 transitions. [2021-10-08 17:37:43,483 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 4672 transitions. Word has length 20 [2021-10-08 17:37:43,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:37:43,483 INFO L470 AbstractCegarLoop]: Abstraction has 1416 states and 4672 transitions. [2021-10-08 17:37:43,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 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 17:37:43,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 4672 transitions. [2021-10-08 17:37:43,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:37:43,488 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:37:43,488 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:37:43,501 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 17:37:43,701 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 17:37:43,701 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 17:37:43,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:37:43,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1962986360, now seen corresponding path program 38 times [2021-10-08 17:37:43,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:37:43,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1219656690] [2021-10-08 17:37:43,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:37:43,704 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:37:43,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:37:43,705 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 17:37:43,706 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 17:37:44,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:37:44,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:37:44,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 17:37:44,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:37:44,332 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:37:44,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:37:45,202 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:37:45,203 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:37:45,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1219656690] [2021-10-08 17:37:45,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1219656690] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:37:45,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:37:45,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-08 17:37:45,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189305673] [2021-10-08 17:37:45,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:37:45,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:37:45,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:37:45,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:37:45,205 INFO L87 Difference]: Start difference. First operand 1416 states and 4672 transitions. Second operand has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 17:38:00,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:38:00,025 INFO L93 Difference]: Finished difference Result 1956 states and 5836 transitions. [2021-10-08 17:38:00,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-10-08 17:38:00,025 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 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 20 [2021-10-08 17:38:00,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:38:00,030 INFO L225 Difference]: With dead ends: 1956 [2021-10-08 17:38:00,030 INFO L226 Difference]: Without dead ends: 1924 [2021-10-08 17:38:00,032 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1153 ImplicationChecksByTransitivity, 12191.1ms TimeCoverageRelationStatistics Valid=826, Invalid=3464, Unknown=0, NotChecked=0, Total=4290 [2021-10-08 17:38:00,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1924 states. [2021-10-08 17:38:00,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1924 to 1512. [2021-10-08 17:38:00,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 1511 states have (on average 3.3183322303110523) internal successors, (5014), 1511 states have internal predecessors, (5014), 0 states have call successors, (0), 0 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 17:38:00,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 5014 transitions. [2021-10-08 17:38:00,081 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 5014 transitions. Word has length 20 [2021-10-08 17:38:00,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:38:00,081 INFO L470 AbstractCegarLoop]: Abstraction has 1512 states and 5014 transitions. [2021-10-08 17:38:00,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 17:38:00,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 5014 transitions. [2021-10-08 17:38:00,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:38:00,085 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:38:00,085 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:38:00,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Ended with exit code 0 [2021-10-08 17:38:00,285 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 17:38:00,286 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 17:38:00,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:38:00,287 INFO L82 PathProgramCache]: Analyzing trace with hash -842575940, now seen corresponding path program 39 times [2021-10-08 17:38:00,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:38:00,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1150911073] [2021-10-08 17:38:00,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:38:00,288 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:38:00,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:38:00,289 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 17:38:00,290 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 17:38:00,703 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 17:38:00,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:38:00,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 17:38:00,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:38:00,943 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:38:00,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:38:02,030 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:38:02,030 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:38:02,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1150911073] [2021-10-08 17:38:02,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1150911073] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:38:02,031 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:38:02,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-08 17:38:02,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865276193] [2021-10-08 17:38:02,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:38:02,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:38:02,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:38:02,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:38:02,032 INFO L87 Difference]: Start difference. First operand 1512 states and 5014 transitions. Second operand has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 17:38:18,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:38:18,909 INFO L93 Difference]: Finished difference Result 1854 states and 5801 transitions. [2021-10-08 17:38:18,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-10-08 17:38:18,911 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 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 20 [2021-10-08 17:38:18,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:38:18,917 INFO L225 Difference]: With dead ends: 1854 [2021-10-08 17:38:18,917 INFO L226 Difference]: Without dead ends: 1830 [2021-10-08 17:38:18,918 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1419 ImplicationChecksByTransitivity, 15849.6ms TimeCoverageRelationStatistics Valid=1049, Invalid=4063, Unknown=0, NotChecked=0, Total=5112 [2021-10-08 17:38:18,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1830 states. [2021-10-08 17:38:18,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1830 to 1562. [2021-10-08 17:38:18,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1562 states, 1561 states have (on average 3.325432415118514) internal successors, (5191), 1561 states have internal predecessors, (5191), 0 states have call successors, (0), 0 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 17:38:18,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 5191 transitions. [2021-10-08 17:38:18,970 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 5191 transitions. Word has length 20 [2021-10-08 17:38:18,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:38:18,970 INFO L470 AbstractCegarLoop]: Abstraction has 1562 states and 5191 transitions. [2021-10-08 17:38:18,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 17:38:18,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 5191 transitions. [2021-10-08 17:38:18,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:38:18,975 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:38:18,976 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:38:18,994 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 17:38:19,191 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 17:38:19,191 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 17:38:19,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:38:19,191 INFO L82 PathProgramCache]: Analyzing trace with hash -384653576, now seen corresponding path program 40 times [2021-10-08 17:38:19,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:38:19,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [372289372] [2021-10-08 17:38:19,192 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:38:19,192 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:38:19,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:38:19,194 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 17:38:19,229 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 17:38:19,610 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:38:19,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:38:19,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 17:38:19,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:38:19,858 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:38:19,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:38:20,490 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:38:20,490 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:38:20,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [372289372] [2021-10-08 17:38:20,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [372289372] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:38:20,491 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:38:20,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-08 17:38:20,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741737506] [2021-10-08 17:38:20,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:38:20,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:38:20,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:38:20,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:38:20,493 INFO L87 Difference]: Start difference. First operand 1562 states and 5191 transitions. Second operand has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 17:38:35,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:38:35,743 INFO L93 Difference]: Finished difference Result 2328 states and 7224 transitions. [2021-10-08 17:38:35,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-10-08 17:38:35,744 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 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 20 [2021-10-08 17:38:35,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:38:35,769 INFO L225 Difference]: With dead ends: 2328 [2021-10-08 17:38:35,769 INFO L226 Difference]: Without dead ends: 2328 [2021-10-08 17:38:35,770 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1879 ImplicationChecksByTransitivity, 10983.3ms TimeCoverageRelationStatistics Valid=1044, Invalid=4656, Unknown=0, NotChecked=0, Total=5700 [2021-10-08 17:38:35,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2328 states. [2021-10-08 17:38:35,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2328 to 1666. [2021-10-08 17:38:35,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1666 states, 1665 states have (on average 3.329129129129129) internal successors, (5543), 1665 states have internal predecessors, (5543), 0 states have call successors, (0), 0 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 17:38:35,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1666 states to 1666 states and 5543 transitions. [2021-10-08 17:38:35,829 INFO L78 Accepts]: Start accepts. Automaton has 1666 states and 5543 transitions. Word has length 20 [2021-10-08 17:38:35,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:38:35,830 INFO L470 AbstractCegarLoop]: Abstraction has 1666 states and 5543 transitions. [2021-10-08 17:38:35,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 17:38:35,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1666 states and 5543 transitions. [2021-10-08 17:38:35,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:38:35,835 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:38:35,835 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:38:35,852 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Ended with exit code 0 [2021-10-08 17:38:36,048 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 17:38:36,048 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 17:38:36,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:38:36,049 INFO L82 PathProgramCache]: Analyzing trace with hash -683932002, now seen corresponding path program 41 times [2021-10-08 17:38:36,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:38:36,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1085305790] [2021-10-08 17:38:36,050 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:38:36,050 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:38:36,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:38:36,051 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 17:38:36,087 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 17:38:36,477 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 17:38:36,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:38:36,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 17:38:36,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:38:36,737 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:38:36,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:38:37,687 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:38:37,688 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:38:37,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1085305790] [2021-10-08 17:38:37,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1085305790] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:38:37,688 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:38:37,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-08 17:38:37,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735711949] [2021-10-08 17:38:37,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:38:37,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:38:37,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:38:37,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:38:37,690 INFO L87 Difference]: Start difference. First operand 1666 states and 5543 transitions. Second operand has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 17:38:58,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:38:58,834 INFO L93 Difference]: Finished difference Result 2498 states and 7618 transitions. [2021-10-08 17:38:58,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-08 17:38:58,836 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 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 20 [2021-10-08 17:38:58,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:38:58,845 INFO L225 Difference]: With dead ends: 2498 [2021-10-08 17:38:58,845 INFO L226 Difference]: Without dead ends: 2434 [2021-10-08 17:38:58,846 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 18538.0ms TimeCoverageRelationStatistics Valid=675, Invalid=2405, Unknown=0, NotChecked=0, Total=3080 [2021-10-08 17:38:58,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2434 states. [2021-10-08 17:38:58,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2434 to 1834. [2021-10-08 17:38:58,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 1833 states have (on average 3.330605564648118) internal successors, (6105), 1833 states have internal predecessors, (6105), 0 states have call successors, (0), 0 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 17:38:58,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 6105 transitions. [2021-10-08 17:38:58,955 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 6105 transitions. Word has length 20 [2021-10-08 17:38:58,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:38:58,956 INFO L470 AbstractCegarLoop]: Abstraction has 1834 states and 6105 transitions. [2021-10-08 17:38:58,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 17:38:58,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 6105 transitions. [2021-10-08 17:38:58,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:38:58,961 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:38:58,962 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:38:58,983 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 17:38:59,176 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 17:38:59,176 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 17:38:59,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:38:59,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1396478658, now seen corresponding path program 42 times [2021-10-08 17:38:59,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:38:59,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [771780060] [2021-10-08 17:38:59,178 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:38:59,178 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:38:59,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:38:59,179 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 17:38:59,214 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 17:38:59,890 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-08 17:38:59,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:38:59,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 17:38:59,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:39:00,118 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:00,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:39:00,671 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:00,671 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:39:00,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [771780060] [2021-10-08 17:39:00,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [771780060] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:39:00,672 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:39:00,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 21 [2021-10-08 17:39:00,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048796283] [2021-10-08 17:39:00,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-08 17:39:00,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:39:00,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-08 17:39:00,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-10-08 17:39:00,674 INFO L87 Difference]: Start difference. First operand 1834 states and 6105 transitions. Second operand has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 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 17:39:07,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:39:07,686 INFO L93 Difference]: Finished difference Result 2356 states and 7452 transitions. [2021-10-08 17:39:07,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-08 17:39:07,687 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 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 20 [2021-10-08 17:39:07,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:39:07,693 INFO L225 Difference]: With dead ends: 2356 [2021-10-08 17:39:07,693 INFO L226 Difference]: Without dead ends: 2344 [2021-10-08 17:39:07,693 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 4898.6ms TimeCoverageRelationStatistics Valid=343, Invalid=1217, Unknown=0, NotChecked=0, Total=1560 [2021-10-08 17:39:07,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2344 states. [2021-10-08 17:39:07,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2344 to 2010. [2021-10-08 17:39:07,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2010 states, 2009 states have (on average 3.338476854156297) internal successors, (6707), 2009 states have internal predecessors, (6707), 0 states have call successors, (0), 0 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 17:39:07,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2010 states to 2010 states and 6707 transitions. [2021-10-08 17:39:07,759 INFO L78 Accepts]: Start accepts. Automaton has 2010 states and 6707 transitions. Word has length 20 [2021-10-08 17:39:07,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:39:07,759 INFO L470 AbstractCegarLoop]: Abstraction has 2010 states and 6707 transitions. [2021-10-08 17:39:07,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 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 17:39:07,759 INFO L276 IsEmpty]: Start isEmpty. Operand 2010 states and 6707 transitions. [2021-10-08 17:39:07,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:39:07,764 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:39:07,764 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:39:07,776 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Ended with exit code 0 [2021-10-08 17:39:07,969 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 17:39:07,970 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 17:39:07,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:39:07,971 INFO L82 PathProgramCache]: Analyzing trace with hash 157159498, now seen corresponding path program 43 times [2021-10-08 17:39:07,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:39:07,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [971942797] [2021-10-08 17:39:07,972 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:39:07,972 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:39:07,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:39:07,973 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 17:39:07,974 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 17:39:08,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:39:08,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 17:39:08,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:39:08,607 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:08,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:39:09,821 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:09,822 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:39:09,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [971942797] [2021-10-08 17:39:09,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [971942797] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:39:09,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:39:09,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-08 17:39:09,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041423531] [2021-10-08 17:39:09,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:39:09,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:39:09,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:39:09,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:39:09,824 INFO L87 Difference]: Start difference. First operand 2010 states and 6707 transitions. Second operand has 22 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 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 17:39:37,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:39:37,356 INFO L93 Difference]: Finished difference Result 2616 states and 8169 transitions. [2021-10-08 17:39:37,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-08 17:39:37,358 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 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 20 [2021-10-08 17:39:37,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:39:37,364 INFO L225 Difference]: With dead ends: 2616 [2021-10-08 17:39:37,364 INFO L226 Difference]: Without dead ends: 2600 [2021-10-08 17:39:37,365 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 23899.6ms TimeCoverageRelationStatistics Valid=595, Invalid=2161, Unknown=0, NotChecked=0, Total=2756 [2021-10-08 17:39:37,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2600 states. [2021-10-08 17:39:37,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2600 to 2150. [2021-10-08 17:39:37,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 2149 states have (on average 3.359236854350861) internal successors, (7219), 2149 states have internal predecessors, (7219), 0 states have call successors, (0), 0 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 17:39:37,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 7219 transitions. [2021-10-08 17:39:37,494 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 7219 transitions. Word has length 20 [2021-10-08 17:39:37,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:39:37,494 INFO L470 AbstractCegarLoop]: Abstraction has 2150 states and 7219 transitions. [2021-10-08 17:39:37,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 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 17:39:37,494 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 7219 transitions. [2021-10-08 17:39:37,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:39:37,501 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:39:37,501 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:39:37,516 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 17:39:37,714 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 17:39:37,714 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 17:39:37,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:39:37,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1126831142, now seen corresponding path program 44 times [2021-10-08 17:39:37,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:39:37,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [545521357] [2021-10-08 17:39:37,716 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:39:37,716 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:39:37,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:39:37,718 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 17:39:37,757 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 17:39:38,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:39:38,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:39:38,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 17:39:38,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:39:38,826 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:38,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:39:39,897 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:39,897 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:39:39,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [545521357] [2021-10-08 17:39:39,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [545521357] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:39:39,898 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:39:39,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-08 17:39:39,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828047455] [2021-10-08 17:39:39,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:39:39,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:39:39,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:39:39,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:39:39,900 INFO L87 Difference]: Start difference. First operand 2150 states and 7219 transitions. Second operand has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 17:40:02,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:40:02,599 INFO L93 Difference]: Finished difference Result 3268 states and 10072 transitions. [2021-10-08 17:40:02,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-08 17:40:02,601 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 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 20 [2021-10-08 17:40:02,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:40:02,608 INFO L225 Difference]: With dead ends: 3268 [2021-10-08 17:40:02,608 INFO L226 Difference]: Without dead ends: 3208 [2021-10-08 17:40:02,609 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 758 ImplicationChecksByTransitivity, 18839.6ms TimeCoverageRelationStatistics Valid=712, Invalid=2710, Unknown=0, NotChecked=0, Total=3422 [2021-10-08 17:40:02,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3208 states. [2021-10-08 17:40:02,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3208 to 2260. [2021-10-08 17:40:02,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2260 states, 2259 states have (on average 3.3753873395307656) internal successors, (7625), 2259 states have internal predecessors, (7625), 0 states have call successors, (0), 0 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 17:40:02,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2260 states to 2260 states and 7625 transitions. [2021-10-08 17:40:02,703 INFO L78 Accepts]: Start accepts. Automaton has 2260 states and 7625 transitions. Word has length 20 [2021-10-08 17:40:02,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:40:02,703 INFO L470 AbstractCegarLoop]: Abstraction has 2260 states and 7625 transitions. [2021-10-08 17:40:02,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 17:40:02,703 INFO L276 IsEmpty]: Start isEmpty. Operand 2260 states and 7625 transitions. [2021-10-08 17:40:02,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:40:02,711 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:40:02,712 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:40:02,733 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 17:40:02,925 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 17:40:02,925 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 17:40:02,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:40:02,926 INFO L82 PathProgramCache]: Analyzing trace with hash -293128442, now seen corresponding path program 45 times [2021-10-08 17:40:02,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:40:02,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1671089596] [2021-10-08 17:40:02,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:40:02,927 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:40:02,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:40:02,929 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 17:40:02,964 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 17:40:03,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-08 17:40:03,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:40:03,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 17:40:03,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:40:03,673 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:40:03,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:40:04,478 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:40:04,478 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:40:04,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1671089596] [2021-10-08 17:40:04,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1671089596] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:40:04,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:40:04,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-10-08 17:40:04,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873993833] [2021-10-08 17:40:04,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:40:04,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:40:04,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:40:04,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:40:04,481 INFO L87 Difference]: Start difference. First operand 2260 states and 7625 transitions. Second operand has 20 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 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 17:40:13,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:40:13,617 INFO L93 Difference]: Finished difference Result 2590 states and 8465 transitions. [2021-10-08 17:40:13,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-08 17:40:13,619 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 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 20 [2021-10-08 17:40:13,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:40:13,625 INFO L225 Difference]: With dead ends: 2590 [2021-10-08 17:40:13,625 INFO L226 Difference]: Without dead ends: 2586 [2021-10-08 17:40:13,626 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 6936.0ms TimeCoverageRelationStatistics Valid=499, Invalid=1757, Unknown=0, NotChecked=0, Total=2256 [2021-10-08 17:40:13,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2586 states. [2021-10-08 17:40:13,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2586 to 2350. [2021-10-08 17:40:13,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2350 states, 2349 states have (on average 3.3963388676032356) internal successors, (7978), 2349 states have internal predecessors, (7978), 0 states have call successors, (0), 0 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 17:40:13,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2350 states to 2350 states and 7978 transitions. [2021-10-08 17:40:13,706 INFO L78 Accepts]: Start accepts. Automaton has 2350 states and 7978 transitions. Word has length 20 [2021-10-08 17:40:13,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:40:13,707 INFO L470 AbstractCegarLoop]: Abstraction has 2350 states and 7978 transitions. [2021-10-08 17:40:13,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 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 17:40:13,707 INFO L276 IsEmpty]: Start isEmpty. Operand 2350 states and 7978 transitions. [2021-10-08 17:40:13,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:40:13,713 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:40:13,714 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:40:13,729 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 17:40:13,927 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 17:40:13,928 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 17:40:13,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:40:13,928 INFO L82 PathProgramCache]: Analyzing trace with hash 980148290, now seen corresponding path program 46 times [2021-10-08 17:40:13,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:40:13,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [603132898] [2021-10-08 17:40:13,929 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:40:13,930 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:40:13,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:40:13,931 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 17:40:13,932 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 17:40:14,389 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:40:14,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:40:14,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 17:40:14,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:40:14,641 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:40:14,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:40:15,629 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:40:15,629 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:40:15,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [603132898] [2021-10-08 17:40:15,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [603132898] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:40:15,630 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:40:15,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-08 17:40:15,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646752163] [2021-10-08 17:40:15,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:40:15,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:40:15,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:40:15,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:40:15,632 INFO L87 Difference]: Start difference. First operand 2350 states and 7978 transitions. Second operand has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 17:40:32,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:40:32,636 INFO L93 Difference]: Finished difference Result 2976 states and 9389 transitions. [2021-10-08 17:40:32,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-08 17:40:32,638 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 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 20 [2021-10-08 17:40:32,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:40:32,646 INFO L225 Difference]: With dead ends: 2976 [2021-10-08 17:40:32,646 INFO L226 Difference]: Without dead ends: 2944 [2021-10-08 17:40:32,647 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 731 ImplicationChecksByTransitivity, 13645.1ms TimeCoverageRelationStatistics Valid=673, Invalid=2749, Unknown=0, NotChecked=0, Total=3422 [2021-10-08 17:40:32,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2021-10-08 17:40:32,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 2450. [2021-10-08 17:40:32,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2450 states, 2449 states have (on average 3.39975500204165) internal successors, (8326), 2449 states have internal predecessors, (8326), 0 states have call successors, (0), 0 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 17:40:32,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2450 states to 2450 states and 8326 transitions. [2021-10-08 17:40:32,711 INFO L78 Accepts]: Start accepts. Automaton has 2450 states and 8326 transitions. Word has length 20 [2021-10-08 17:40:32,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:40:32,711 INFO L470 AbstractCegarLoop]: Abstraction has 2450 states and 8326 transitions. [2021-10-08 17:40:32,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 17:40:32,712 INFO L276 IsEmpty]: Start isEmpty. Operand 2450 states and 8326 transitions. [2021-10-08 17:40:32,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:40:32,717 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:40:32,717 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:40:32,728 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 17:40:32,918 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 17:40:32,918 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 17:40:32,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:40:32,919 INFO L82 PathProgramCache]: Analyzing trace with hash -32739554, now seen corresponding path program 47 times [2021-10-08 17:40:32,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:40:32,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [365951972] [2021-10-08 17:40:32,920 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:40:32,921 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:40:32,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:40:32,922 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 17:40:32,927 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 17:40:33,406 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 17:40:33,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:40:33,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 17:40:33,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:40:33,681 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:40:33,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:40:34,624 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:40:34,625 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:40:34,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [365951972] [2021-10-08 17:40:34,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [365951972] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:40:34,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:40:34,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-08 17:40:34,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23757595] [2021-10-08 17:40:34,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:40:34,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:40:34,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:40:34,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:40:34,628 INFO L87 Difference]: Start difference. First operand 2450 states and 8326 transitions. Second operand has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 17:41:01,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:41:01,568 INFO L93 Difference]: Finished difference Result 2928 states and 9372 transitions. [2021-10-08 17:41:01,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-08 17:41:01,568 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 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 20 [2021-10-08 17:41:01,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:41:01,574 INFO L225 Difference]: With dead ends: 2928 [2021-10-08 17:41:01,574 INFO L226 Difference]: Without dead ends: 2888 [2021-10-08 17:41:01,575 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 869 ImplicationChecksByTransitivity, 23425.3ms TimeCoverageRelationStatistics Valid=801, Invalid=3105, Unknown=0, NotChecked=0, Total=3906 [2021-10-08 17:41:01,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2888 states. [2021-10-08 17:41:01,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2888 to 2482. [2021-10-08 17:41:01,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2482 states, 2481 states have (on average 3.3978234582829505) internal successors, (8430), 2481 states have internal predecessors, (8430), 0 states have call successors, (0), 0 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 17:41:01,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2482 states to 2482 states and 8430 transitions. [2021-10-08 17:41:01,638 INFO L78 Accepts]: Start accepts. Automaton has 2482 states and 8430 transitions. Word has length 20 [2021-10-08 17:41:01,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:41:01,639 INFO L470 AbstractCegarLoop]: Abstraction has 2482 states and 8430 transitions. [2021-10-08 17:41:01,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 17:41:01,639 INFO L276 IsEmpty]: Start isEmpty. Operand 2482 states and 8430 transitions. [2021-10-08 17:41:01,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:41:01,644 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:41:01,644 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:41:01,655 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 17:41:01,844 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 17:41:01,845 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 17:41:01,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:41:01,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1367491646, now seen corresponding path program 48 times [2021-10-08 17:41:01,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:41:01,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [210104295] [2021-10-08 17:41:01,847 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:41:01,847 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:41:01,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:41:01,848 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 17:41:01,849 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 17:41:02,368 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 17:41:02,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:41:02,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 17:41:02,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:41:02,620 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:41:02,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:41:03,311 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:41:03,312 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:41:03,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [210104295] [2021-10-08 17:41:03,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [210104295] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:41:03,312 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:41:03,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-08 17:41:03,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961412225] [2021-10-08 17:41:03,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:41:03,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:41:03,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:41:03,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:41:03,314 INFO L87 Difference]: Start difference. First operand 2482 states and 8430 transitions. Second operand has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 17:41:38,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:41:38,111 INFO L93 Difference]: Finished difference Result 3248 states and 10416 transitions. [2021-10-08 17:41:38,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-10-08 17:41:38,112 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 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 20 [2021-10-08 17:41:38,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:41:38,118 INFO L225 Difference]: With dead ends: 3248 [2021-10-08 17:41:38,119 INFO L226 Difference]: Without dead ends: 3248 [2021-10-08 17:41:38,119 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2653 ImplicationChecksByTransitivity, 23474.1ms TimeCoverageRelationStatistics Valid=1375, Invalid=6815, Unknown=0, NotChecked=0, Total=8190 [2021-10-08 17:41:38,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3248 states. [2021-10-08 17:41:38,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3248 to 2714. [2021-10-08 17:41:38,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2714 states, 2713 states have (on average 3.3925543678584593) internal successors, (9204), 2713 states have internal predecessors, (9204), 0 states have call successors, (0), 0 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 17:41:38,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2714 states to 2714 states and 9204 transitions. [2021-10-08 17:41:38,183 INFO L78 Accepts]: Start accepts. Automaton has 2714 states and 9204 transitions. Word has length 20 [2021-10-08 17:41:38,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:41:38,183 INFO L470 AbstractCegarLoop]: Abstraction has 2714 states and 9204 transitions. [2021-10-08 17:41:38,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 17:41:38,183 INFO L276 IsEmpty]: Start isEmpty. Operand 2714 states and 9204 transitions. [2021-10-08 17:41:38,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:41:38,189 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:41:38,189 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:41:38,205 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 17:41:38,398 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 17:41:38,398 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 17:41:38,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:41:38,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1749445966, now seen corresponding path program 49 times [2021-10-08 17:41:38,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:41:38,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1867254285] [2021-10-08 17:41:38,400 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:41:38,400 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:41:38,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:41:38,401 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 17:41:38,402 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 17:41:38,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:41:38,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 17:41:38,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:41:39,136 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:41:39,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:41:40,050 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:41:40,050 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:41:40,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1867254285] [2021-10-08 17:41:40,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1867254285] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:41:40,051 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:41:40,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-08 17:41:40,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065741303] [2021-10-08 17:41:40,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:41:40,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:41:40,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:41:40,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:41:40,053 INFO L87 Difference]: Start difference. First operand 2714 states and 9204 transitions. Second operand has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 17:42:01,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:42:01,509 INFO L93 Difference]: Finished difference Result 3652 states and 11540 transitions. [2021-10-08 17:42:01,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-10-08 17:42:01,510 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 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 20 [2021-10-08 17:42:01,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:42:01,518 INFO L225 Difference]: With dead ends: 3652 [2021-10-08 17:42:01,519 INFO L226 Difference]: Without dead ends: 3580 [2021-10-08 17:42:01,519 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1317 ImplicationChecksByTransitivity, 19004.3ms TimeCoverageRelationStatistics Valid=922, Invalid=4048, Unknown=0, NotChecked=0, Total=4970 [2021-10-08 17:42:01,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3580 states. [2021-10-08 17:42:01,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3580 to 2776. [2021-10-08 17:42:01,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2776 states, 2775 states have (on average 3.3863063063063064) internal successors, (9397), 2775 states have internal predecessors, (9397), 0 states have call successors, (0), 0 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 17:42:01,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2776 states to 2776 states and 9397 transitions. [2021-10-08 17:42:01,595 INFO L78 Accepts]: Start accepts. Automaton has 2776 states and 9397 transitions. Word has length 20 [2021-10-08 17:42:01,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:42:01,595 INFO L470 AbstractCegarLoop]: Abstraction has 2776 states and 9397 transitions. [2021-10-08 17:42:01,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 17:42:01,596 INFO L276 IsEmpty]: Start isEmpty. Operand 2776 states and 9397 transitions. [2021-10-08 17:42:01,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:42:01,604 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:42:01,604 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:42:01,618 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 17:42:01,818 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 17:42:01,819 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 17:42:01,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:42:01,820 INFO L82 PathProgramCache]: Analyzing trace with hash -106371882, now seen corresponding path program 50 times [2021-10-08 17:42:01,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:42:01,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [472367355] [2021-10-08 17:42:01,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:42:01,821 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:42:01,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:42:01,822 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 17:42:01,823 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 17:42:02,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:42:02,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:42:02,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 17:42:02,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:42:02,559 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:42:02,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:42:03,573 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:42:03,573 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:42:03,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [472367355] [2021-10-08 17:42:03,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [472367355] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:42:03,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:42:03,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-10-08 17:42:03,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758330177] [2021-10-08 17:42:03,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:42:03,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:42:03,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:42:03,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:42:03,576 INFO L87 Difference]: Start difference. First operand 2776 states and 9397 transitions. Second operand has 20 states, 20 states have (on average 1.6) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 17:42:19,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:42:19,976 INFO L93 Difference]: Finished difference Result 3660 states and 11550 transitions. [2021-10-08 17:42:19,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-08 17:42:19,978 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 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 20 [2021-10-08 17:42:19,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:42:19,989 INFO L225 Difference]: With dead ends: 3660 [2021-10-08 17:42:19,989 INFO L226 Difference]: Without dead ends: 3628 [2021-10-08 17:42:19,989 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 729 ImplicationChecksByTransitivity, 12379.2ms TimeCoverageRelationStatistics Valid=703, Invalid=2377, Unknown=0, NotChecked=0, Total=3080 [2021-10-08 17:42:19,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3628 states. [2021-10-08 17:42:20,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3628 to 2710. [2021-10-08 17:42:20,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2710 states, 2709 states have (on average 3.3794758213362863) internal successors, (9155), 2709 states have internal predecessors, (9155), 0 states have call successors, (0), 0 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 17:42:20,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2710 states to 2710 states and 9155 transitions. [2021-10-08 17:42:20,077 INFO L78 Accepts]: Start accepts. Automaton has 2710 states and 9155 transitions. Word has length 20 [2021-10-08 17:42:20,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:42:20,078 INFO L470 AbstractCegarLoop]: Abstraction has 2710 states and 9155 transitions. [2021-10-08 17:42:20,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 17:42:20,078 INFO L276 IsEmpty]: Start isEmpty. Operand 2710 states and 9155 transitions. [2021-10-08 17:42:20,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:42:20,084 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:42:20,084 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:42:20,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Ended with exit code 0 [2021-10-08 17:42:20,284 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 17:42:20,285 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 17:42:20,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:42:20,285 INFO L82 PathProgramCache]: Analyzing trace with hash -497983938, now seen corresponding path program 51 times [2021-10-08 17:42:20,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:42:20,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [106100288] [2021-10-08 17:42:20,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:42:20,287 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:42:20,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:42:20,288 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 17:42:20,289 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 17:42:20,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-08 17:42:20,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:42:20,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 17:42:20,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:42:21,029 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:42:21,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:42:21,785 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:42:21,785 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:42:21,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [106100288] [2021-10-08 17:42:21,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [106100288] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:42:21,786 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:42:21,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-10-08 17:42:21,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53389054] [2021-10-08 17:42:21,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:42:21,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:42:21,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:42:21,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:42:21,788 INFO L87 Difference]: Start difference. First operand 2710 states and 9155 transitions. Second operand has 20 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 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 17:42:27,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:42:27,792 INFO L93 Difference]: Finished difference Result 2826 states and 9434 transitions. [2021-10-08 17:42:27,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-08 17:42:27,794 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 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 20 [2021-10-08 17:42:27,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:42:27,800 INFO L225 Difference]: With dead ends: 2826 [2021-10-08 17:42:27,800 INFO L226 Difference]: Without dead ends: 2824 [2021-10-08 17:42:27,800 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 5198.3ms TimeCoverageRelationStatistics Valid=472, Invalid=1690, Unknown=0, NotChecked=0, Total=2162 [2021-10-08 17:42:27,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2824 states. [2021-10-08 17:42:27,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2824 to 2732. [2021-10-08 17:42:27,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2732 states, 2731 states have (on average 3.380446722812157) internal successors, (9232), 2731 states have internal predecessors, (9232), 0 states have call successors, (0), 0 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 17:42:27,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2732 states to 2732 states and 9232 transitions. [2021-10-08 17:42:27,855 INFO L78 Accepts]: Start accepts. Automaton has 2732 states and 9232 transitions. Word has length 20 [2021-10-08 17:42:27,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:42:27,855 INFO L470 AbstractCegarLoop]: Abstraction has 2732 states and 9232 transitions. [2021-10-08 17:42:27,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 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 17:42:27,855 INFO L276 IsEmpty]: Start isEmpty. Operand 2732 states and 9232 transitions. [2021-10-08 17:42:27,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:42:27,861 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:42:27,861 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:42:27,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Ended with exit code 0 [2021-10-08 17:42:28,061 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 17:42:28,062 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 17:42:28,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:42:28,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1358642406, now seen corresponding path program 52 times [2021-10-08 17:42:28,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:42:28,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1982035714] [2021-10-08 17:42:28,064 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:42:28,064 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:42:28,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:42:28,066 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 17:42:28,067 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 17:42:28,590 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:42:28,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:42:28,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 17:42:28,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:42:28,813 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:42:28,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:42:29,631 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:42:29,631 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:42:29,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1982035714] [2021-10-08 17:42:29,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1982035714] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:42:29,632 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:42:29,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-10-08 17:42:29,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308518072] [2021-10-08 17:42:29,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:42:29,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:42:29,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:42:29,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:42:29,634 INFO L87 Difference]: Start difference. First operand 2732 states and 9232 transitions. Second operand has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 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 17:42:39,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:42:39,283 INFO L93 Difference]: Finished difference Result 3754 states and 12068 transitions. [2021-10-08 17:42:39,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-10-08 17:42:39,286 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 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 20 [2021-10-08 17:42:39,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:42:39,297 INFO L225 Difference]: With dead ends: 3754 [2021-10-08 17:42:39,298 INFO L226 Difference]: Without dead ends: 3742 [2021-10-08 17:42:39,298 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1229 ImplicationChecksByTransitivity, 8130.0ms TimeCoverageRelationStatistics Valid=998, Invalid=3694, Unknown=0, NotChecked=0, Total=4692 [2021-10-08 17:42:39,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3742 states. [2021-10-08 17:42:39,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3742 to 2850. [2021-10-08 17:42:39,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2850 states, 2849 states have (on average 3.388908388908389) internal successors, (9655), 2849 states have internal predecessors, (9655), 0 states have call successors, (0), 0 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 17:42:39,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2850 states to 2850 states and 9655 transitions. [2021-10-08 17:42:39,427 INFO L78 Accepts]: Start accepts. Automaton has 2850 states and 9655 transitions. Word has length 20 [2021-10-08 17:42:39,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:42:39,427 INFO L470 AbstractCegarLoop]: Abstraction has 2850 states and 9655 transitions. [2021-10-08 17:42:39,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 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 17:42:39,427 INFO L276 IsEmpty]: Start isEmpty. Operand 2850 states and 9655 transitions. [2021-10-08 17:42:39,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:42:39,435 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:42:39,435 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:42:39,446 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 17:42:39,635 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 17:42:39,636 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 17:42:39,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:42:39,637 INFO L82 PathProgramCache]: Analyzing trace with hash -85365674, now seen corresponding path program 53 times [2021-10-08 17:42:39,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:42:39,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1513429762] [2021-10-08 17:42:39,639 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:42:39,639 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:42:39,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:42:39,641 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 17:42:39,642 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 17:42:40,225 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-08 17:42:40,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:42:40,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 17:42:40,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:42:40,938 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:42:40,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:42:41,560 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:42:41,560 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:42:41,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1513429762] [2021-10-08 17:42:41,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1513429762] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:42:41,561 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:42:41,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-08 17:42:41,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411592188] [2021-10-08 17:42:41,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 17:42:41,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:42:41,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 17:42:41,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:42:41,563 INFO L87 Difference]: Start difference. First operand 2850 states and 9655 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 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 17:42:47,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:42:47,637 INFO L93 Difference]: Finished difference Result 3586 states and 11671 transitions. [2021-10-08 17:42:47,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-08 17:42:47,637 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 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 20 [2021-10-08 17:42:47,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:42:47,645 INFO L225 Difference]: With dead ends: 3586 [2021-10-08 17:42:47,645 INFO L226 Difference]: Without dead ends: 3558 [2021-10-08 17:42:47,646 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 5361.8ms TimeCoverageRelationStatistics Valid=628, Invalid=1628, Unknown=0, NotChecked=0, Total=2256 [2021-10-08 17:42:47,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3558 states. [2021-10-08 17:42:47,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3558 to 2976. [2021-10-08 17:42:47,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2976 states, 2975 states have (on average 3.391596638655462) internal successors, (10090), 2975 states have internal predecessors, (10090), 0 states have call successors, (0), 0 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 17:42:47,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2976 states to 2976 states and 10090 transitions. [2021-10-08 17:42:47,744 INFO L78 Accepts]: Start accepts. Automaton has 2976 states and 10090 transitions. Word has length 20 [2021-10-08 17:42:47,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:42:47,744 INFO L470 AbstractCegarLoop]: Abstraction has 2976 states and 10090 transitions. [2021-10-08 17:42:47,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 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 17:42:47,744 INFO L276 IsEmpty]: Start isEmpty. Operand 2976 states and 10090 transitions. [2021-10-08 17:42:47,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:42:47,751 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:42:47,751 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:42:47,765 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 17:42:47,951 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 17:42:47,952 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 17:42:47,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:42:47,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1861961686, now seen corresponding path program 54 times [2021-10-08 17:42:47,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:42:47,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [728453853] [2021-10-08 17:42:47,954 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:42:47,955 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:42:47,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:42:47,956 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 17:42:47,957 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 17:42:48,537 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 17:42:48,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:42:48,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 17:42:48,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:42:48,723 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:42:48,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:42:49,198 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:42:49,198 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:42:49,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [728453853] [2021-10-08 17:42:49,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [728453853] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:42:49,199 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:42:49,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-10-08 17:42:49,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592367416] [2021-10-08 17:42:49,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:42:49,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:42:49,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:42:49,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:42:49,200 INFO L87 Difference]: Start difference. First operand 2976 states and 10090 transitions. Second operand has 20 states, 20 states have (on average 1.6) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 17:42:54,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:42:54,476 INFO L93 Difference]: Finished difference Result 3990 states and 12921 transitions. [2021-10-08 17:42:54,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-10-08 17:42:54,476 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 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 20 [2021-10-08 17:42:54,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:42:54,485 INFO L225 Difference]: With dead ends: 3990 [2021-10-08 17:42:54,485 INFO L226 Difference]: Without dead ends: 3990 [2021-10-08 17:42:54,486 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1442 ImplicationChecksByTransitivity, 3287.7ms TimeCoverageRelationStatistics Valid=790, Invalid=4612, Unknown=0, NotChecked=0, Total=5402 [2021-10-08 17:42:54,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3990 states. [2021-10-08 17:42:54,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3990 to 3064. [2021-10-08 17:42:54,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3064 states, 3063 states have (on average 3.3973228860594187) internal successors, (10406), 3063 states have internal predecessors, (10406), 0 states have call successors, (0), 0 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 17:42:54,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3064 states to 3064 states and 10406 transitions. [2021-10-08 17:42:54,575 INFO L78 Accepts]: Start accepts. Automaton has 3064 states and 10406 transitions. Word has length 20 [2021-10-08 17:42:54,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:42:54,575 INFO L470 AbstractCegarLoop]: Abstraction has 3064 states and 10406 transitions. [2021-10-08 17:42:54,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 17:42:54,575 INFO L276 IsEmpty]: Start isEmpty. Operand 3064 states and 10406 transitions. [2021-10-08 17:42:54,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:42:54,582 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:42:54,582 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:42:54,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Forceful destruction successful, exit code 0 [2021-10-08 17:42:54,792 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 17:42:54,793 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 17:42:54,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:42:54,794 INFO L82 PathProgramCache]: Analyzing trace with hash -298034546, now seen corresponding path program 55 times [2021-10-08 17:42:54,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:42:54,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1030773066] [2021-10-08 17:42:54,795 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:42:54,795 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:42:54,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:42:54,796 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 17:42:54,797 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 17:42:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:42:55,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 17:42:55,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:42:55,573 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:42:55,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:42:56,530 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:42:56,531 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:42:56,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1030773066] [2021-10-08 17:42:56,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1030773066] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:42:56,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:42:56,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-08 17:42:56,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721872180] [2021-10-08 17:42:56,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:42:56,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:42:56,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:42:56,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:42:56,533 INFO L87 Difference]: Start difference. First operand 3064 states and 10406 transitions. Second operand has 22 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 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 17:43:21,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:43:21,615 INFO L93 Difference]: Finished difference Result 3804 states and 12072 transitions. [2021-10-08 17:43:21,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-10-08 17:43:21,617 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 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 20 [2021-10-08 17:43:21,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:43:21,625 INFO L225 Difference]: With dead ends: 3804 [2021-10-08 17:43:21,625 INFO L226 Difference]: Without dead ends: 3792 [2021-10-08 17:43:21,625 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1294 ImplicationChecksByTransitivity, 23256.0ms TimeCoverageRelationStatistics Valid=954, Invalid=4016, Unknown=0, NotChecked=0, Total=4970 [2021-10-08 17:43:21,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3792 states. [2021-10-08 17:43:21,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3792 to 3100. [2021-10-08 17:43:21,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3100 states, 3099 states have (on average 3.405614714424008) internal successors, (10554), 3099 states have internal predecessors, (10554), 0 states have call successors, (0), 0 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 17:43:21,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3100 states to 3100 states and 10554 transitions. [2021-10-08 17:43:21,732 INFO L78 Accepts]: Start accepts. Automaton has 3100 states and 10554 transitions. Word has length 20 [2021-10-08 17:43:21,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:43:21,732 INFO L470 AbstractCegarLoop]: Abstraction has 3100 states and 10554 transitions. [2021-10-08 17:43:21,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 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 17:43:21,733 INFO L276 IsEmpty]: Start isEmpty. Operand 3100 states and 10554 transitions. [2021-10-08 17:43:21,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:43:21,739 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:43:21,739 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:43:21,750 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 17:43:21,939 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 17:43:21,940 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 17:43:21,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:43:21,941 INFO L82 PathProgramCache]: Analyzing trace with hash 128588122, now seen corresponding path program 56 times [2021-10-08 17:43:21,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:43:21,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1575525562] [2021-10-08 17:43:21,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:43:21,942 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:43:21,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:43:21,943 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 17:43:21,952 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 17:43:22,540 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:43:22,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:43:22,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 17:43:22,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:43:22,717 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:43:22,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:43:23,262 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:43:23,262 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:43:23,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1575525562] [2021-10-08 17:43:23,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1575525562] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:43:23,263 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:43:23,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-10-08 17:43:23,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833721960] [2021-10-08 17:43:23,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:43:23,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:43:23,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:43:23,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:43:23,264 INFO L87 Difference]: Start difference. First operand 3100 states and 10554 transitions. Second operand has 20 states, 20 states have (on average 1.6) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 17:43:40,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:43:40,192 INFO L93 Difference]: Finished difference Result 4070 states and 12838 transitions. [2021-10-08 17:43:40,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-10-08 17:43:40,193 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 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 20 [2021-10-08 17:43:40,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:43:40,211 INFO L225 Difference]: With dead ends: 4070 [2021-10-08 17:43:40,212 INFO L226 Difference]: Without dead ends: 4018 [2021-10-08 17:43:40,212 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2208 ImplicationChecksByTransitivity, 13800.9ms TimeCoverageRelationStatistics Valid=1302, Invalid=5838, Unknown=0, NotChecked=0, Total=7140 [2021-10-08 17:43:40,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4018 states. [2021-10-08 17:43:40,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4018 to 2972. [2021-10-08 17:43:40,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2972 states, 2971 states have (on average 3.401548300235611) internal successors, (10106), 2971 states have internal predecessors, (10106), 0 states have call successors, (0), 0 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 17:43:40,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2972 states to 2972 states and 10106 transitions. [2021-10-08 17:43:40,278 INFO L78 Accepts]: Start accepts. Automaton has 2972 states and 10106 transitions. Word has length 20 [2021-10-08 17:43:40,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:43:40,278 INFO L470 AbstractCegarLoop]: Abstraction has 2972 states and 10106 transitions. [2021-10-08 17:43:40,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 17:43:40,279 INFO L276 IsEmpty]: Start isEmpty. Operand 2972 states and 10106 transitions. [2021-10-08 17:43:40,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:43:40,285 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:43:40,286 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:43:40,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Forceful destruction successful, exit code 0 [2021-10-08 17:43:40,486 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 17:43:40,487 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 17:43:40,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:43:40,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1822949290, now seen corresponding path program 57 times [2021-10-08 17:43:40,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:43:40,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1214950280] [2021-10-08 17:43:40,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:43:40,489 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:43:40,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:43:40,490 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 17:43:40,491 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 17:43:41,058 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-08 17:43:41,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:43:41,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 17:43:41,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:43:41,314 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:43:41,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:43:42,029 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:43:42,030 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:43:42,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1214950280] [2021-10-08 17:43:42,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1214950280] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:43:42,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:43:42,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-10-08 17:43:42,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721162005] [2021-10-08 17:43:42,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:43:42,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:43:42,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:43:42,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:43:42,032 INFO L87 Difference]: Start difference. First operand 2972 states and 10106 transitions. Second operand has 20 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 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 17:43:47,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:43:47,122 INFO L93 Difference]: Finished difference Result 3054 states and 10339 transitions. [2021-10-08 17:43:47,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-08 17:43:47,124 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 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 20 [2021-10-08 17:43:47,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:43:47,133 INFO L225 Difference]: With dead ends: 3054 [2021-10-08 17:43:47,134 INFO L226 Difference]: Without dead ends: 3052 [2021-10-08 17:43:47,134 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 4717.3ms TimeCoverageRelationStatistics Valid=417, Invalid=1563, Unknown=0, NotChecked=0, Total=1980 [2021-10-08 17:43:47,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3052 states. [2021-10-08 17:43:47,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3052 to 3000. [2021-10-08 17:43:47,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3000 states, 2999 states have (on average 3.3997999333111038) internal successors, (10196), 2999 states have internal predecessors, (10196), 0 states have call successors, (0), 0 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 17:43:47,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3000 states to 3000 states and 10196 transitions. [2021-10-08 17:43:47,229 INFO L78 Accepts]: Start accepts. Automaton has 3000 states and 10196 transitions. Word has length 20 [2021-10-08 17:43:47,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:43:47,229 INFO L470 AbstractCegarLoop]: Abstraction has 3000 states and 10196 transitions. [2021-10-08 17:43:47,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 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 17:43:47,230 INFO L276 IsEmpty]: Start isEmpty. Operand 3000 states and 10196 transitions. [2021-10-08 17:43:47,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:43:47,237 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:43:47,237 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:43:47,249 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 17:43:47,438 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 17:43:47,438 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 17:43:47,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:43:47,439 INFO L82 PathProgramCache]: Analyzing trace with hash 962290822, now seen corresponding path program 58 times [2021-10-08 17:43:47,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:43:47,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [804217978] [2021-10-08 17:43:47,440 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:43:47,441 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:43:47,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:43:47,441 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 17:43:47,443 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 17:43:48,030 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:43:48,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:43:48,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 17:43:48,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:43:48,231 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:43:48,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:43:48,866 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:43:48,866 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:43:48,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [804217978] [2021-10-08 17:43:48,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [804217978] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:43:48,867 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:43:48,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-10-08 17:43:48,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266686042] [2021-10-08 17:43:48,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:43:48,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:43:48,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:43:48,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:43:48,868 INFO L87 Difference]: Start difference. First operand 3000 states and 10196 transitions. Second operand has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 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 17:43:56,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:43:56,076 INFO L93 Difference]: Finished difference Result 3854 states and 12400 transitions. [2021-10-08 17:43:56,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-10-08 17:43:56,077 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 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 20 [2021-10-08 17:43:56,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:43:56,086 INFO L225 Difference]: With dead ends: 3854 [2021-10-08 17:43:56,086 INFO L226 Difference]: Without dead ends: 3842 [2021-10-08 17:43:56,087 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1138 ImplicationChecksByTransitivity, 6704.7ms TimeCoverageRelationStatistics Valid=918, Invalid=3504, Unknown=0, NotChecked=0, Total=4422 [2021-10-08 17:43:56,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3842 states. [2021-10-08 17:43:56,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3842 to 2990. [2021-10-08 17:43:56,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2990 states, 2989 states have (on average 3.3987955838072934) internal successors, (10159), 2989 states have internal predecessors, (10159), 0 states have call successors, (0), 0 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 17:43:56,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2990 states to 2990 states and 10159 transitions. [2021-10-08 17:43:56,175 INFO L78 Accepts]: Start accepts. Automaton has 2990 states and 10159 transitions. Word has length 20 [2021-10-08 17:43:56,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:43:56,175 INFO L470 AbstractCegarLoop]: Abstraction has 2990 states and 10159 transitions. [2021-10-08 17:43:56,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 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 17:43:56,175 INFO L276 IsEmpty]: Start isEmpty. Operand 2990 states and 10159 transitions. [2021-10-08 17:43:56,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:43:56,181 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:43:56,181 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:43:56,210 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 17:43:56,382 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 17:43:56,382 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 17:43:56,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:43:56,383 INFO L82 PathProgramCache]: Analyzing trace with hash -2059399742, now seen corresponding path program 59 times [2021-10-08 17:43:56,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:43:56,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [399109664] [2021-10-08 17:43:56,384 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:43:56,384 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:43:56,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:43:56,386 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 17:43:56,386 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 17:43:56,965 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-08 17:43:56,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:43:56,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 17:43:56,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:43:57,655 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:43:57,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:43:58,198 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:43:58,199 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:43:58,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [399109664] [2021-10-08 17:43:58,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [399109664] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:43:58,199 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:43:58,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-08 17:43:58,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349025025] [2021-10-08 17:43:58,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 17:43:58,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:43:58,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 17:43:58,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:43:58,201 INFO L87 Difference]: Start difference. First operand 2990 states and 10159 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 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 17:44:03,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:44:03,783 INFO L93 Difference]: Finished difference Result 3702 states and 12019 transitions. [2021-10-08 17:44:03,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-08 17:44:03,784 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 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 20 [2021-10-08 17:44:03,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:44:03,793 INFO L225 Difference]: With dead ends: 3702 [2021-10-08 17:44:03,793 INFO L226 Difference]: Without dead ends: 3674 [2021-10-08 17:44:03,793 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 4872.9ms TimeCoverageRelationStatistics Valid=539, Invalid=1267, Unknown=0, NotChecked=0, Total=1806 [2021-10-08 17:44:03,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3674 states. [2021-10-08 17:44:03,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3674 to 3014. [2021-10-08 17:44:03,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3014 states, 3013 states have (on average 3.4009293063391968) internal successors, (10247), 3013 states have internal predecessors, (10247), 0 states have call successors, (0), 0 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 17:44:03,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3014 states to 3014 states and 10247 transitions. [2021-10-08 17:44:03,870 INFO L78 Accepts]: Start accepts. Automaton has 3014 states and 10247 transitions. Word has length 20 [2021-10-08 17:44:03,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:44:03,870 INFO L470 AbstractCegarLoop]: Abstraction has 3014 states and 10247 transitions. [2021-10-08 17:44:03,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 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 17:44:03,870 INFO L276 IsEmpty]: Start isEmpty. Operand 3014 states and 10247 transitions. [2021-10-08 17:44:03,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:44:03,876 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:44:03,876 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:44:03,887 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 17:44:04,076 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 17:44:04,077 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 17:44:04,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:44:04,078 INFO L82 PathProgramCache]: Analyzing trace with hash -112072382, now seen corresponding path program 60 times [2021-10-08 17:44:04,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:44:04,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1601984171] [2021-10-08 17:44:04,078 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:44:04,079 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:44:04,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:44:04,080 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 17:44:04,081 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 17:44:04,706 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 17:44:04,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:44:04,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 17:44:04,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:44:04,899 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:44:04,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:44:05,270 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:44:05,271 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:44:05,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1601984171] [2021-10-08 17:44:05,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1601984171] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:44:05,271 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:44:05,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-10-08 17:44:05,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063325759] [2021-10-08 17:44:05,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:44:05,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:44:05,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:44:05,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:44:05,272 INFO L87 Difference]: Start difference. First operand 3014 states and 10247 transitions. Second operand has 20 states, 20 states have (on average 1.6) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 17:44:12,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:44:12,382 INFO L93 Difference]: Finished difference Result 4482 states and 14281 transitions. [2021-10-08 17:44:12,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-10-08 17:44:12,382 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 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 20 [2021-10-08 17:44:12,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:44:12,407 INFO L225 Difference]: With dead ends: 4482 [2021-10-08 17:44:12,407 INFO L226 Difference]: Without dead ends: 4482 [2021-10-08 17:44:12,408 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2741 ImplicationChecksByTransitivity, 4902.9ms TimeCoverageRelationStatistics Valid=1298, Invalid=7258, Unknown=0, NotChecked=0, Total=8556 [2021-10-08 17:44:12,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4482 states. [2021-10-08 17:44:12,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4482 to 3080. [2021-10-08 17:44:12,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3080 states, 3079 states have (on average 3.402403377720039) internal successors, (10476), 3079 states have internal predecessors, (10476), 0 states have call successors, (0), 0 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 17:44:12,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3080 states to 3080 states and 10476 transitions. [2021-10-08 17:44:12,475 INFO L78 Accepts]: Start accepts. Automaton has 3080 states and 10476 transitions. Word has length 20 [2021-10-08 17:44:12,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:44:12,475 INFO L470 AbstractCegarLoop]: Abstraction has 3080 states and 10476 transitions. [2021-10-08 17:44:12,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 17:44:12,475 INFO L276 IsEmpty]: Start isEmpty. Operand 3080 states and 10476 transitions. [2021-10-08 17:44:12,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:44:12,480 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:44:12,480 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:44:12,492 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 17:44:12,682 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 17:44:12,682 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 17:44:12,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:44:12,683 INFO L82 PathProgramCache]: Analyzing trace with hash -41844546, now seen corresponding path program 61 times [2021-10-08 17:44:12,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:44:12,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [171006963] [2021-10-08 17:44:12,684 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:44:12,684 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:44:12,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:44:12,685 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 17:44:12,687 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 17:44:13,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:44:13,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 17:44:13,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:44:13,523 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:44:13,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:44:13,878 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:44:13,878 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:44:13,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [171006963] [2021-10-08 17:44:13,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [171006963] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:44:13,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:44:13,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-10-08 17:44:13,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809745908] [2021-10-08 17:44:13,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:44:13,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:44:13,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:44:13,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:44:13,880 INFO L87 Difference]: Start difference. First operand 3080 states and 10476 transitions. Second operand has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 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 17:44:17,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:44:17,231 INFO L93 Difference]: Finished difference Result 3868 states and 12850 transitions. [2021-10-08 17:44:17,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-08 17:44:17,232 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 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 20 [2021-10-08 17:44:17,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:44:17,240 INFO L225 Difference]: With dead ends: 3868 [2021-10-08 17:44:17,240 INFO L226 Difference]: Without dead ends: 3864 [2021-10-08 17:44:17,241 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 2818.8ms TimeCoverageRelationStatistics Valid=548, Invalid=1708, Unknown=0, NotChecked=0, Total=2256 [2021-10-08 17:44:17,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3864 states. [2021-10-08 17:44:17,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3864 to 3108. [2021-10-08 17:44:17,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3108 states, 3107 states have (on average 3.4052140328290954) internal successors, (10580), 3107 states have internal predecessors, (10580), 0 states have call successors, (0), 0 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 17:44:17,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3108 states to 3108 states and 10580 transitions. [2021-10-08 17:44:17,415 INFO L78 Accepts]: Start accepts. Automaton has 3108 states and 10580 transitions. Word has length 20 [2021-10-08 17:44:17,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:44:17,416 INFO L470 AbstractCegarLoop]: Abstraction has 3108 states and 10580 transitions. [2021-10-08 17:44:17,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 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 17:44:17,416 INFO L276 IsEmpty]: Start isEmpty. Operand 3108 states and 10580 transitions. [2021-10-08 17:44:17,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:44:17,424 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:44:17,425 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:44:17,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Forceful destruction successful, exit code 0 [2021-10-08 17:44:17,638 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 17:44:17,639 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 17:44:17,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:44:17,640 INFO L82 PathProgramCache]: Analyzing trace with hash -902503014, now seen corresponding path program 62 times [2021-10-08 17:44:17,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:44:17,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [256741133] [2021-10-08 17:44:17,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:44:17,641 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:44:17,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:44:17,642 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 17:44:17,643 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 17:44:18,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:44:18,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:44:18,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 17:44:18,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:44:18,502 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:44:18,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:44:19,175 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:44:19,175 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:44:19,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [256741133] [2021-10-08 17:44:19,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [256741133] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:44:19,176 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:44:19,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 21 [2021-10-08 17:44:19,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211837959] [2021-10-08 17:44:19,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-08 17:44:19,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:44:19,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-08 17:44:19,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-10-08 17:44:19,177 INFO L87 Difference]: Start difference. First operand 3108 states and 10580 transitions. Second operand has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 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 17:44:24,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:44:24,640 INFO L93 Difference]: Finished difference Result 3912 states and 12537 transitions. [2021-10-08 17:44:24,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-08 17:44:24,641 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 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 20 [2021-10-08 17:44:24,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:44:24,650 INFO L225 Difference]: With dead ends: 3912 [2021-10-08 17:44:24,650 INFO L226 Difference]: Without dead ends: 3904 [2021-10-08 17:44:24,651 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 5213.0ms TimeCoverageRelationStatistics Valid=598, Invalid=2264, Unknown=0, NotChecked=0, Total=2862 [2021-10-08 17:44:24,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3904 states. [2021-10-08 17:44:24,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3904 to 3128. [2021-10-08 17:44:24,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3128 states, 3127 states have (on average 3.4058202750239848) internal successors, (10650), 3127 states have internal predecessors, (10650), 0 states have call successors, (0), 0 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 17:44:24,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3128 states to 3128 states and 10650 transitions. [2021-10-08 17:44:24,745 INFO L78 Accepts]: Start accepts. Automaton has 3128 states and 10650 transitions. Word has length 20 [2021-10-08 17:44:24,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:44:24,745 INFO L470 AbstractCegarLoop]: Abstraction has 3128 states and 10650 transitions. [2021-10-08 17:44:24,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 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 17:44:24,745 INFO L276 IsEmpty]: Start isEmpty. Operand 3128 states and 10650 transitions. [2021-10-08 17:44:24,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:44:24,751 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:44:24,751 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:44:24,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Ended with exit code 0 [2021-10-08 17:44:24,953 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 17:44:24,953 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 17:44:24,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:44:24,954 INFO L82 PathProgramCache]: Analyzing trace with hash 370773718, now seen corresponding path program 63 times [2021-10-08 17:44:24,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:44:24,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [237784345] [2021-10-08 17:44:24,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:44:24,955 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:44:24,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:44:24,956 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 17:44:24,957 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 17:44:25,622 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-08 17:44:25,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:44:25,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 17:44:25,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:44:25,923 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:44:25,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:44:26,609 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:44:26,609 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:44:26,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [237784345] [2021-10-08 17:44:26,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [237784345] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:44:26,610 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:44:26,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 21 [2021-10-08 17:44:26,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559885397] [2021-10-08 17:44:26,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-08 17:44:26,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:44:26,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-08 17:44:26,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2021-10-08 17:44:26,611 INFO L87 Difference]: Start difference. First operand 3128 states and 10650 transitions. Second operand has 21 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 17:44:33,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:44:33,493 INFO L93 Difference]: Finished difference Result 3402 states and 11208 transitions. [2021-10-08 17:44:33,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-08 17:44:33,494 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 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 20 [2021-10-08 17:44:33,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:44:33,501 INFO L225 Difference]: With dead ends: 3402 [2021-10-08 17:44:33,502 INFO L226 Difference]: Without dead ends: 3378 [2021-10-08 17:44:33,502 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 6362.6ms TimeCoverageRelationStatistics Valid=519, Invalid=2237, Unknown=0, NotChecked=0, Total=2756 [2021-10-08 17:44:33,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3378 states. [2021-10-08 17:44:33,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3378 to 3138. [2021-10-08 17:44:33,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3138 states, 3137 states have (on average 3.4035702900860696) internal successors, (10677), 3137 states have internal predecessors, (10677), 0 states have call successors, (0), 0 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 17:44:33,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3138 states to 3138 states and 10677 transitions. [2021-10-08 17:44:33,609 INFO L78 Accepts]: Start accepts. Automaton has 3138 states and 10677 transitions. Word has length 20 [2021-10-08 17:44:33,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:44:33,609 INFO L470 AbstractCegarLoop]: Abstraction has 3138 states and 10677 transitions. [2021-10-08 17:44:33,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 17:44:33,609 INFO L276 IsEmpty]: Start isEmpty. Operand 3138 states and 10677 transitions. [2021-10-08 17:44:33,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:44:33,618 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:44:33,618 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:44:33,638 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 17:44:33,831 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 17:44:33,831 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 17:44:33,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:44:33,832 INFO L82 PathProgramCache]: Analyzing trace with hash -642114126, now seen corresponding path program 64 times [2021-10-08 17:44:33,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:44:33,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766170541] [2021-10-08 17:44:33,833 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:44:33,833 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:44:33,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:44:33,834 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 17:44:33,835 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 17:44:34,478 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:44:34,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:44:34,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 17:44:34,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:44:34,768 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:44:34,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:44:35,345 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:44:35,346 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:44:35,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [766170541] [2021-10-08 17:44:35,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [766170541] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:44:35,346 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:44:35,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-08 17:44:35,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054406721] [2021-10-08 17:44:35,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:44:35,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:44:35,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:44:35,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:44:35,348 INFO L87 Difference]: Start difference. First operand 3138 states and 10677 transitions. Second operand has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 17:44:42,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:44:42,848 INFO L93 Difference]: Finished difference Result 4082 states and 12942 transitions. [2021-10-08 17:44:42,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-08 17:44:42,849 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 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 20 [2021-10-08 17:44:42,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:44:42,857 INFO L225 Difference]: With dead ends: 4082 [2021-10-08 17:44:42,858 INFO L226 Difference]: Without dead ends: 4046 [2021-10-08 17:44:42,858 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1113 ImplicationChecksByTransitivity, 7181.0ms TimeCoverageRelationStatistics Valid=954, Invalid=3336, Unknown=0, NotChecked=0, Total=4290 [2021-10-08 17:44:42,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4046 states. [2021-10-08 17:44:42,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4046 to 3138. [2021-10-08 17:44:42,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3138 states, 3137 states have (on average 3.4010200828817343) internal successors, (10669), 3137 states have internal predecessors, (10669), 0 states have call successors, (0), 0 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 17:44:42,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3138 states to 3138 states and 10669 transitions. [2021-10-08 17:44:42,928 INFO L78 Accepts]: Start accepts. Automaton has 3138 states and 10669 transitions. Word has length 20 [2021-10-08 17:44:42,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:44:42,928 INFO L470 AbstractCegarLoop]: Abstraction has 3138 states and 10669 transitions. [2021-10-08 17:44:42,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 17:44:42,929 INFO L276 IsEmpty]: Start isEmpty. Operand 3138 states and 10669 transitions. [2021-10-08 17:44:42,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:44:42,935 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:44:42,935 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:44:42,948 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 17:44:43,135 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 17:44:43,136 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 17:44:43,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:44:43,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1976866218, now seen corresponding path program 65 times [2021-10-08 17:44:43,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:44:43,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1140657282] [2021-10-08 17:44:43,138 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:44:43,138 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:44:43,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:44:43,139 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 17:44:43,140 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 17:44:43,796 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 17:44:43,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:44:43,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 17:44:43,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:44:44,629 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:44:44,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:44:45,235 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:44:45,236 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:44:45,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1140657282] [2021-10-08 17:44:45,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1140657282] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:44:45,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:44:45,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-08 17:44:45,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309048298] [2021-10-08 17:44:45,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 17:44:45,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:44:45,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 17:44:45,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:44:45,239 INFO L87 Difference]: Start difference. First operand 3138 states and 10669 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 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 17:44:49,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:44:49,852 INFO L93 Difference]: Finished difference Result 3644 states and 12034 transitions. [2021-10-08 17:44:49,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-08 17:44:49,854 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 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 20 [2021-10-08 17:44:49,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:44:49,863 INFO L225 Difference]: With dead ends: 3644 [2021-10-08 17:44:49,863 INFO L226 Difference]: Without dead ends: 3644 [2021-10-08 17:44:49,863 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 4007.5ms TimeCoverageRelationStatistics Valid=426, Invalid=1056, Unknown=0, NotChecked=0, Total=1482 [2021-10-08 17:44:49,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3644 states. [2021-10-08 17:44:49,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3644 to 3082. [2021-10-08 17:44:49,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3082 states, 3081 states have (on average 3.3966244725738397) internal successors, (10465), 3081 states have internal predecessors, (10465), 0 states have call successors, (0), 0 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 17:44:49,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3082 states to 3082 states and 10465 transitions. [2021-10-08 17:44:49,941 INFO L78 Accepts]: Start accepts. Automaton has 3082 states and 10465 transitions. Word has length 20 [2021-10-08 17:44:49,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:44:49,941 INFO L470 AbstractCegarLoop]: Abstraction has 3082 states and 10465 transitions. [2021-10-08 17:44:49,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 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 17:44:49,942 INFO L276 IsEmpty]: Start isEmpty. Operand 3082 states and 10465 transitions. [2021-10-08 17:44:49,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:44:49,947 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:44:49,947 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:44:49,959 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Ended with exit code 0 [2021-10-08 17:44:50,147 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 17:44:50,148 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 17:44:50,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:44:50,149 INFO L82 PathProgramCache]: Analyzing trace with hash 2119399106, now seen corresponding path program 66 times [2021-10-08 17:44:50,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:44:50,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [533765880] [2021-10-08 17:44:50,150 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:44:50,150 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:44:50,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:44:50,151 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 17:44:50,152 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 17:44:50,847 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 17:44:50,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:44:50,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 17:44:50,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:44:51,036 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:44:51,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:44:51,316 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:44:51,316 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:44:51,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [533765880] [2021-10-08 17:44:51,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [533765880] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:44:51,317 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:44:51,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-08 17:44:51,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881175108] [2021-10-08 17:44:51,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:44:51,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:44:51,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:44:51,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:44:51,319 INFO L87 Difference]: Start difference. First operand 3082 states and 10465 transitions. Second operand has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 17:44:52,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:44:52,549 INFO L93 Difference]: Finished difference Result 4484 states and 14658 transitions. [2021-10-08 17:44:52,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 17:44:52,549 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 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 20 [2021-10-08 17:44:52,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:44:52,559 INFO L225 Difference]: With dead ends: 4484 [2021-10-08 17:44:52,559 INFO L226 Difference]: Without dead ends: 4484 [2021-10-08 17:44:52,560 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 951.7ms TimeCoverageRelationStatistics Valid=295, Invalid=1187, Unknown=0, NotChecked=0, Total=1482 [2021-10-08 17:44:52,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4484 states. [2021-10-08 17:44:52,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4484 to 3068. [2021-10-08 17:44:52,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3068 states, 3067 states have (on average 3.394848386044995) internal successors, (10412), 3067 states have internal predecessors, (10412), 0 states have call successors, (0), 0 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 17:44:52,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3068 states to 3068 states and 10412 transitions. [2021-10-08 17:44:52,648 INFO L78 Accepts]: Start accepts. Automaton has 3068 states and 10412 transitions. Word has length 20 [2021-10-08 17:44:52,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:44:52,648 INFO L470 AbstractCegarLoop]: Abstraction has 3068 states and 10412 transitions. [2021-10-08 17:44:52,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 17:44:52,648 INFO L276 IsEmpty]: Start isEmpty. Operand 3068 states and 10412 transitions. [2021-10-08 17:44:52,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 17:44:52,653 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:44:52,653 INFO L512 BasicCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:44:52,666 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 17:44:52,854 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 17:44:52,854 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 17:44:52,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:44:52,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1012753618, now seen corresponding path program 67 times [2021-10-08 17:44:52,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:44:52,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2123802086] [2021-10-08 17:44:52,856 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:44:52,856 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:44:52,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:44:52,860 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 17:44:52,862 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 17:44:53,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:44:53,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 17:44:53,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:44:53,729 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:44:53,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:44:54,230 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:44:54,230 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:44:54,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2123802086] [2021-10-08 17:44:54,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2123802086] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:44:54,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:44:54,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-08 17:44:54,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356775098] [2021-10-08 17:44:54,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:44:54,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:44:54,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:44:54,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:44:54,232 INFO L87 Difference]: Start difference. First operand 3068 states and 10412 transitions. Second operand has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 17:45:13,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:45:13,824 INFO L93 Difference]: Finished difference Result 4834 states and 14645 transitions. [2021-10-08 17:45:13,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2021-10-08 17:45:13,825 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 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 21 [2021-10-08 17:45:13,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:45:13,836 INFO L225 Difference]: With dead ends: 4834 [2021-10-08 17:45:13,836 INFO L226 Difference]: Without dead ends: 4770 [2021-10-08 17:45:13,837 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7678 ImplicationChecksByTransitivity, 16202.2ms TimeCoverageRelationStatistics Valid=3227, Invalid=16513, Unknown=0, NotChecked=0, Total=19740 [2021-10-08 17:45:13,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4770 states. [2021-10-08 17:45:13,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4770 to 3252. [2021-10-08 17:45:13,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3252 states, 3251 states have (on average 3.3952629960012306) internal successors, (11038), 3251 states have internal predecessors, (11038), 0 states have call successors, (0), 0 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 17:45:13,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3252 states to 3252 states and 11038 transitions. [2021-10-08 17:45:13,938 INFO L78 Accepts]: Start accepts. Automaton has 3252 states and 11038 transitions. Word has length 21 [2021-10-08 17:45:13,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:45:13,938 INFO L470 AbstractCegarLoop]: Abstraction has 3252 states and 11038 transitions. [2021-10-08 17:45:13,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 17:45:13,938 INFO L276 IsEmpty]: Start isEmpty. Operand 3252 states and 11038 transitions. [2021-10-08 17:45:13,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 17:45:13,944 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:45:13,944 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:45:13,956 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 17:45:14,144 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 17:45:14,145 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 17:45:14,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:45:14,146 INFO L82 PathProgramCache]: Analyzing trace with hash 973217288, now seen corresponding path program 68 times [2021-10-08 17:45:14,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:45:14,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [122713864] [2021-10-08 17:45:14,147 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:45:14,147 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:45:14,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:45:14,148 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 17:45:14,150 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 17:45:15,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:45:15,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:45:15,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 17:45:15,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:45:15,587 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:45:15,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:45:16,136 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:45:16,137 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:45:16,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [122713864] [2021-10-08 17:45:16,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [122713864] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:45:16,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:45:16,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 17:45:16,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373742434] [2021-10-08 17:45:16,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:45:16,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:45:16,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:45:16,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:45:16,139 INFO L87 Difference]: Start difference. First operand 3252 states and 11038 transitions. Second operand has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 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 17:45:17,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:45:17,566 INFO L93 Difference]: Finished difference Result 4119 states and 13897 transitions. [2021-10-08 17:45:17,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 17:45:17,567 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 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 21 [2021-10-08 17:45:17,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:45:17,577 INFO L225 Difference]: With dead ends: 4119 [2021-10-08 17:45:17,577 INFO L226 Difference]: Without dead ends: 4068 [2021-10-08 17:45:17,577 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 549.2ms TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:45:17,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4068 states. [2021-10-08 17:45:17,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4068 to 3862. [2021-10-08 17:45:17,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3862 states, 3861 states have (on average 3.4206164206164207) internal successors, (13207), 3861 states have internal predecessors, (13207), 0 states have call successors, (0), 0 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 17:45:17,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3862 states to 3862 states and 13207 transitions. [2021-10-08 17:45:17,675 INFO L78 Accepts]: Start accepts. Automaton has 3862 states and 13207 transitions. Word has length 21 [2021-10-08 17:45:17,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:45:17,675 INFO L470 AbstractCegarLoop]: Abstraction has 3862 states and 13207 transitions. [2021-10-08 17:45:17,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 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 17:45:17,675 INFO L276 IsEmpty]: Start isEmpty. Operand 3862 states and 13207 transitions. [2021-10-08 17:45:17,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 17:45:17,682 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:45:17,682 INFO L512 BasicCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:45:17,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Forceful destruction successful, exit code 0 [2021-10-08 17:45:17,883 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 17:45:17,883 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 17:45:17,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:45:17,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1033933860, now seen corresponding path program 69 times [2021-10-08 17:45:17,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:45:17,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [776448958] [2021-10-08 17:45:17,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:45:17,885 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:45:17,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:45:17,886 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 17:45:17,888 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 17:45:18,687 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-08 17:45:18,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:45:18,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 17:45:18,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:45:18,903 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:45:18,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:45:20,323 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:45:20,324 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:45:20,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [776448958] [2021-10-08 17:45:20,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [776448958] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:45:20,324 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:45:20,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 23 [2021-10-08 17:45:20,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112037904] [2021-10-08 17:45:20,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-08 17:45:20,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:45:20,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-08 17:45:20,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2021-10-08 17:45:20,326 INFO L87 Difference]: Start difference. First operand 3862 states and 13207 transitions. Second operand has 23 states, 23 states have (on average 1.434782608695652) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 17:45:46,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:45:46,521 INFO L93 Difference]: Finished difference Result 4698 states and 15290 transitions. [2021-10-08 17:45:46,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-08 17:45:46,523 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.434782608695652) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 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 21 [2021-10-08 17:45:46,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:45:46,534 INFO L225 Difference]: With dead ends: 4698 [2021-10-08 17:45:46,535 INFO L226 Difference]: Without dead ends: 4696 [2021-10-08 17:45:46,535 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 16158.1ms TimeCoverageRelationStatistics Valid=540, Invalid=3120, Unknown=0, NotChecked=0, Total=3660 [2021-10-08 17:45:46,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4696 states. [2021-10-08 17:45:46,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4696 to 4138. [2021-10-08 17:45:46,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4138 states, 4137 states have (on average 3.447667391829828) internal successors, (14263), 4137 states have internal predecessors, (14263), 0 states have call successors, (0), 0 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 17:45:46,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4138 states to 4138 states and 14263 transitions. [2021-10-08 17:45:46,730 INFO L78 Accepts]: Start accepts. Automaton has 4138 states and 14263 transitions. Word has length 21 [2021-10-08 17:45:46,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:45:46,730 INFO L470 AbstractCegarLoop]: Abstraction has 4138 states and 14263 transitions. [2021-10-08 17:45:46,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.434782608695652) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 17:45:46,730 INFO L276 IsEmpty]: Start isEmpty. Operand 4138 states and 14263 transitions. [2021-10-08 17:45:46,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 17:45:46,769 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:45:46,769 INFO L512 BasicCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:45:46,813 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 17:45:46,977 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 17:45:46,978 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 17:45:46,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:45:46,979 INFO L82 PathProgramCache]: Analyzing trace with hash -903567120, now seen corresponding path program 70 times [2021-10-08 17:45:46,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:45:46,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [571516180] [2021-10-08 17:45:46,980 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:45:46,980 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:45:46,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:45:46,981 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 17:45:46,982 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 17:45:47,733 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:45:47,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:45:47,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 17:45:47,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:45:47,963 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:45:47,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:45:48,706 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:45:48,706 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:45:48,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [571516180] [2021-10-08 17:45:48,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [571516180] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:45:48,707 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:45:48,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-10-08 17:45:48,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334682050] [2021-10-08 17:45:48,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-08 17:45:48,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:45:48,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-08 17:45:48,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2021-10-08 17:45:48,708 INFO L87 Difference]: Start difference. First operand 4138 states and 14263 transitions. Second operand has 24 states, 24 states have (on average 1.375) internal successors, (33), 24 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 17:45:57,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:45:57,626 INFO L93 Difference]: Finished difference Result 4958 states and 16124 transitions. [2021-10-08 17:45:57,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-08 17:45:57,627 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.375) internal successors, (33), 24 states have internal predecessors, (33), 0 states have call successors, (0), 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 21 [2021-10-08 17:45:57,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:45:57,639 INFO L225 Difference]: With dead ends: 4958 [2021-10-08 17:45:57,639 INFO L226 Difference]: Without dead ends: 4942 [2021-10-08 17:45:57,639 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 5660.5ms TimeCoverageRelationStatistics Valid=526, Invalid=1454, Unknown=0, NotChecked=0, Total=1980 [2021-10-08 17:45:57,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4942 states. [2021-10-08 17:45:57,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4942 to 4290. [2021-10-08 17:45:57,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4290 states, 4289 states have (on average 3.451387269759851) internal successors, (14803), 4289 states have internal predecessors, (14803), 0 states have call successors, (0), 0 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 17:45:57,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4290 states to 4290 states and 14803 transitions. [2021-10-08 17:45:57,759 INFO L78 Accepts]: Start accepts. Automaton has 4290 states and 14803 transitions. Word has length 21 [2021-10-08 17:45:57,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:45:57,759 INFO L470 AbstractCegarLoop]: Abstraction has 4290 states and 14803 transitions. [2021-10-08 17:45:57,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.375) internal successors, (33), 24 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 17:45:57,760 INFO L276 IsEmpty]: Start isEmpty. Operand 4290 states and 14803 transitions. [2021-10-08 17:45:57,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 17:45:57,769 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:45:57,769 INFO L512 BasicCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:45:57,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Ended with exit code 0 [2021-10-08 17:45:57,985 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 17:45:57,985 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 17:45:57,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:45:57,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1125234268, now seen corresponding path program 71 times [2021-10-08 17:45:57,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:45:57,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [858239587] [2021-10-08 17:45:57,987 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:45:57,988 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:45:57,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:45:57,989 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 17:45:57,990 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 17:45:58,690 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 17:45:58,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:45:58,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 17:45:58,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:45:59,429 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:45:59,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:46:00,302 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:46:00,302 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:46:00,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [858239587] [2021-10-08 17:46:00,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [858239587] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:46:00,303 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:46:00,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-10-08 17:46:00,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924408333] [2021-10-08 17:46:00,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:46:00,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:46:00,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:46:00,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:46:00,304 INFO L87 Difference]: Start difference. First operand 4290 states and 14803 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 19 states have internal predecessors, (31), 0 states have call successors, (0), 0 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 17:46:07,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:46:07,087 INFO L93 Difference]: Finished difference Result 6048 states and 20030 transitions. [2021-10-08 17:46:07,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-08 17:46:07,089 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 19 states have internal predecessors, (31), 0 states have call successors, (0), 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 21 [2021-10-08 17:46:07,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:46:07,105 INFO L225 Difference]: With dead ends: 6048 [2021-10-08 17:46:07,105 INFO L226 Difference]: Without dead ends: 6036 [2021-10-08 17:46:07,106 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 5258.6ms TimeCoverageRelationStatistics Valid=568, Invalid=1154, Unknown=0, NotChecked=0, Total=1722 [2021-10-08 17:46:07,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6036 states. [2021-10-08 17:46:07,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6036 to 4572. [2021-10-08 17:46:07,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4572 states, 4571 states have (on average 3.4644497921680157) internal successors, (15836), 4571 states have internal predecessors, (15836), 0 states have call successors, (0), 0 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 17:46:07,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4572 states to 4572 states and 15836 transitions. [2021-10-08 17:46:07,269 INFO L78 Accepts]: Start accepts. Automaton has 4572 states and 15836 transitions. Word has length 21 [2021-10-08 17:46:07,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:46:07,269 INFO L470 AbstractCegarLoop]: Abstraction has 4572 states and 15836 transitions. [2021-10-08 17:46:07,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 19 states have internal predecessors, (31), 0 states have call successors, (0), 0 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 17:46:07,270 INFO L276 IsEmpty]: Start isEmpty. Operand 4572 states and 15836 transitions. [2021-10-08 17:46:07,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 17:46:07,281 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:46:07,281 INFO L512 BasicCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:46:07,296 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 17:46:07,495 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 17:46:07,496 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 17:46:07,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:46:07,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1637447460, now seen corresponding path program 72 times [2021-10-08 17:46:07,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:46:07,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [59530952] [2021-10-08 17:46:07,498 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:46:07,498 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:46:07,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:46:07,500 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 17:46:07,501 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 17:46:08,266 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-08 17:46:08,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:46:08,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 17:46:08,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:46:08,455 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:46:08,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:46:08,904 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:46:08,905 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:46:08,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [59530952] [2021-10-08 17:46:08,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [59530952] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:46:08,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:46:08,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-08 17:46:08,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92767042] [2021-10-08 17:46:08,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:46:08,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:46:08,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:46:08,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:46:08,907 INFO L87 Difference]: Start difference. First operand 4572 states and 15836 transitions. Second operand has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 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 17:46:28,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:46:28,772 INFO L93 Difference]: Finished difference Result 7144 states and 22807 transitions. [2021-10-08 17:46:28,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-10-08 17:46:28,774 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 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 21 [2021-10-08 17:46:28,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:46:28,791 INFO L225 Difference]: With dead ends: 7144 [2021-10-08 17:46:28,792 INFO L226 Difference]: Without dead ends: 7072 [2021-10-08 17:46:28,792 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1970 ImplicationChecksByTransitivity, 14836.3ms TimeCoverageRelationStatistics Valid=1294, Invalid=5186, Unknown=0, NotChecked=0, Total=6480 [2021-10-08 17:46:28,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7072 states. [2021-10-08 17:46:28,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7072 to 4820. [2021-10-08 17:46:28,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4820 states, 4819 states have (on average 3.472919692882341) internal successors, (16736), 4819 states have internal predecessors, (16736), 0 states have call successors, (0), 0 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 17:46:29,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4820 states to 4820 states and 16736 transitions. [2021-10-08 17:46:29,011 INFO L78 Accepts]: Start accepts. Automaton has 4820 states and 16736 transitions. Word has length 21 [2021-10-08 17:46:29,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:46:29,011 INFO L470 AbstractCegarLoop]: Abstraction has 4820 states and 16736 transitions. [2021-10-08 17:46:29,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 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 17:46:29,011 INFO L276 IsEmpty]: Start isEmpty. Operand 4820 states and 16736 transitions. [2021-10-08 17:46:29,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:46:29,024 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:46:29,024 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:46:29,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Forceful destruction successful, exit code 0 [2021-10-08 17:46:29,238 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 17:46:29,239 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 17:46:29,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:46:29,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1781039482, now seen corresponding path program 73 times [2021-10-08 17:46:29,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:46:29,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [297635922] [2021-10-08 17:46:29,241 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:46:29,241 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:46:29,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:46:29,243 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 17:46:29,249 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 17:46:30,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:46:30,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 17:46:30,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:46:30,258 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:46:30,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:46:30,947 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:46:30,948 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:46:30,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [297635922] [2021-10-08 17:46:30,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [297635922] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:46:30,949 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:46:30,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-10-08 17:46:30,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560212848] [2021-10-08 17:46:30,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-08 17:46:30,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:46:30,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-08 17:46:30,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2021-10-08 17:46:30,951 INFO L87 Difference]: Start difference. First operand 4820 states and 16736 transitions. Second operand has 24 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 24 states have internal predecessors, (35), 0 states have call successors, (0), 0 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 17:46:42,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:46:42,528 INFO L93 Difference]: Finished difference Result 5682 states and 18762 transitions. [2021-10-08 17:46:42,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-10-08 17:46:42,530 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 24 states have internal predecessors, (35), 0 states have call successors, (0), 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 22 [2021-10-08 17:46:42,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:46:42,543 INFO L225 Difference]: With dead ends: 5682 [2021-10-08 17:46:42,544 INFO L226 Difference]: Without dead ends: 5638 [2021-10-08 17:46:42,544 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1402 ImplicationChecksByTransitivity, 9849.8ms TimeCoverageRelationStatistics Valid=1013, Invalid=4389, Unknown=0, NotChecked=0, Total=5402 [2021-10-08 17:46:42,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5638 states. [2021-10-08 17:46:42,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5638 to 4952. [2021-10-08 17:46:42,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4952 states, 4951 states have (on average 3.4599070894768733) internal successors, (17130), 4951 states have internal predecessors, (17130), 0 states have call successors, (0), 0 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 17:46:42,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4952 states to 4952 states and 17130 transitions. [2021-10-08 17:46:42,679 INFO L78 Accepts]: Start accepts. Automaton has 4952 states and 17130 transitions. Word has length 22 [2021-10-08 17:46:42,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:46:42,680 INFO L470 AbstractCegarLoop]: Abstraction has 4952 states and 17130 transitions. [2021-10-08 17:46:42,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 24 states have internal predecessors, (35), 0 states have call successors, (0), 0 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 17:46:42,680 INFO L276 IsEmpty]: Start isEmpty. Operand 4952 states and 17130 transitions. [2021-10-08 17:46:42,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:46:42,689 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:46:42,689 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:46:42,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Ended with exit code 0 [2021-10-08 17:46:42,889 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 17:46:42,890 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 17:46:42,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:46:42,891 INFO L82 PathProgramCache]: Analyzing trace with hash 707954102, now seen corresponding path program 74 times [2021-10-08 17:46:42,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:46:42,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [237467726] [2021-10-08 17:46:42,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:46:42,892 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:46:42,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:46:42,894 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 17:46:42,897 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 17:46:43,645 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:46:43,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:46:43,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 17:46:43,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:46:43,871 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:46:43,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:46:44,706 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:46:44,706 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:46:44,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [237467726] [2021-10-08 17:46:44,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [237467726] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:46:44,707 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:46:44,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 25 [2021-10-08 17:46:44,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963475348] [2021-10-08 17:46:44,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-08 17:46:44,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:46:44,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-08 17:46:44,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=485, Unknown=0, NotChecked=0, Total=600 [2021-10-08 17:46:44,709 INFO L87 Difference]: Start difference. First operand 4952 states and 17130 transitions. Second operand has 25 states, 25 states have (on average 1.44) internal successors, (36), 25 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 17:46:56,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:46:56,409 INFO L93 Difference]: Finished difference Result 5838 states and 19384 transitions. [2021-10-08 17:46:56,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-08 17:46:56,409 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.44) internal successors, (36), 25 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 22 [2021-10-08 17:46:56,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:46:56,430 INFO L225 Difference]: With dead ends: 5838 [2021-10-08 17:46:56,430 INFO L226 Difference]: Without dead ends: 5826 [2021-10-08 17:46:56,431 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 9613.2ms TimeCoverageRelationStatistics Valid=612, Invalid=2468, Unknown=0, NotChecked=0, Total=3080 [2021-10-08 17:46:56,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5826 states. [2021-10-08 17:46:56,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5826 to 5126. [2021-10-08 17:46:56,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5126 states, 5125 states have (on average 3.446439024390244) internal successors, (17663), 5125 states have internal predecessors, (17663), 0 states have call successors, (0), 0 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 17:46:56,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5126 states to 5126 states and 17663 transitions. [2021-10-08 17:46:56,637 INFO L78 Accepts]: Start accepts. Automaton has 5126 states and 17663 transitions. Word has length 22 [2021-10-08 17:46:56,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:46:56,637 INFO L470 AbstractCegarLoop]: Abstraction has 5126 states and 17663 transitions. [2021-10-08 17:46:56,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.44) internal successors, (36), 25 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 17:46:56,638 INFO L276 IsEmpty]: Start isEmpty. Operand 5126 states and 17663 transitions. [2021-10-08 17:46:56,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:46:56,694 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:46:56,694 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:46:56,706 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 17:46:56,894 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 17:46:56,895 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:46:56,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:46:56,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1802045690, now seen corresponding path program 75 times [2021-10-08 17:46:56,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:46:56,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2113088395] [2021-10-08 17:46:56,897 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:46:56,898 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:46:56,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:46:56,899 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:46:56,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2021-10-08 17:46:57,703 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-08 17:46:57,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:46:57,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 17:46:57,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:46:57,925 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:46:57,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:46:59,797 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:46:59,798 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:46:59,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2113088395] [2021-10-08 17:46:59,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2113088395] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:46:59,799 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:46:59,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 25 [2021-10-08 17:46:59,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249216124] [2021-10-08 17:46:59,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-08 17:46:59,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:46:59,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-08 17:46:59,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2021-10-08 17:46:59,800 INFO L87 Difference]: Start difference. First operand 5126 states and 17663 transitions. Second operand has 25 states, 25 states have (on average 1.44) internal successors, (36), 25 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 17:47:15,498 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 17:47:15,531 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-08 17:47:15,614 WARN L223 SmtUtils]: Removed 5 from assertion stack [2021-10-08 17:47:15,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-08 17:47:15,616 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 17:47:15,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Forceful destruction successful, exit code 0 [2021-10-08 17:47:15,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:47:15,818 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (5126states) and FLOYD_HOARE automaton (currently 24 states, 25 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 32 for 265ms.. [2021-10-08 17:47:15,821 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-08 17:47:15,821 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-08 17:47:15,821 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-08 17:47:15,822 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-08 17:47:15,822 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-08 17:47:15,822 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-08 17:47:15,822 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-08 17:47:15,822 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-08 17:47:15,822 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 17:47:15,823 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-08 17:47:15,823 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-08 17:47:15,828 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-08 17:47:15,828 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-08 17:47:15,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.10 05:47:15 BasicIcfg [2021-10-08 17:47:15,832 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-08 17:47:15,833 INFO L168 Benchmark]: Toolchain (without parser) took 845566.31 ms. Allocated memory was 151.0 MB in the beginning and 262.1 MB in the end (delta: 111.1 MB). Free memory was 126.1 MB in the beginning and 143.1 MB in the end (delta: -17.0 MB). Peak memory consumption was 94.6 MB. Max. memory is 8.0 GB. [2021-10-08 17:47:15,833 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory is still 123.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-08 17:47:15,833 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.23 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 115.1 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-08 17:47:15,834 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.50 ms. Allocated memory is still 151.0 MB. Free memory was 115.0 MB in the beginning and 113.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-08 17:47:15,834 INFO L168 Benchmark]: Boogie Preprocessor took 52.88 ms. Allocated memory is still 151.0 MB. Free memory was 113.5 MB in the beginning and 112.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-08 17:47:15,834 INFO L168 Benchmark]: RCFGBuilder took 628.82 ms. Allocated memory is still 151.0 MB. Free memory was 112.0 MB in the beginning and 98.2 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-10-08 17:47:15,835 INFO L168 Benchmark]: TraceAbstraction took 844548.37 ms. Allocated memory was 151.0 MB in the beginning and 262.1 MB in the end (delta: 111.1 MB). Free memory was 97.8 MB in the beginning and 143.1 MB in the end (delta: -45.3 MB). Peak memory consumption was 66.3 MB. Max. memory is 8.0 GB. [2021-10-08 17:47:15,836 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory is still 123.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 266.23 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 115.1 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 43.50 ms. Allocated memory is still 151.0 MB. Free memory was 115.0 MB in the beginning and 113.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 52.88 ms. Allocated memory is still 151.0 MB. Free memory was 113.5 MB in the beginning and 112.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 628.82 ms. Allocated memory is still 151.0 MB. Free memory was 112.0 MB in the beginning and 98.2 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 844548.37 ms. Allocated memory was 151.0 MB in the beginning and 262.1 MB in the end (delta: 111.1 MB). Free memory was 97.8 MB in the beginning and 143.1 MB in the end (delta: -45.3 MB). Peak memory consumption was 66.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7619.1ms, 92 PlacesBefore, 32 PlacesAfterwards, 91 TransitionsBefore, 27 TransitionsAfterwards, 660 CoEnabledTransitionPairs, 6 FixpointIterations, 57 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 89 TotalNumberOfCompositions, 759 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 723, positive: 719, positive conditional: 0, positive unconditional: 719, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 413, positive: 409, positive conditional: 0, positive unconditional: 409, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 413, positive: 409, positive conditional: 0, positive unconditional: 409, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 50, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 50, negative conditional: 0, negative unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 723, positive: 310, positive conditional: 0, positive unconditional: 310, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 413, unknown conditional: 0, unknown unconditional: 413] , 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: 74]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (5126states) and FLOYD_HOARE automaton (currently 24 states, 25 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 32 for 265ms.. - TimeoutResultAtElement [Line: 68]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (5126states) and FLOYD_HOARE automaton (currently 24 states, 25 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 32 for 265ms.. - TimeoutResultAtElement [Line: 68]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (5126states) and FLOYD_HOARE automaton (currently 24 states, 25 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 32 for 265ms.. - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (5126states) and FLOYD_HOARE automaton (currently 24 states, 25 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 32 for 265ms.. - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (5126states) and FLOYD_HOARE automaton (currently 24 states, 25 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 32 for 265ms.. - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (5126states) and FLOYD_HOARE automaton (currently 24 states, 25 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 32 for 265ms.. - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (5126states) and FLOYD_HOARE automaton (currently 24 states, 25 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 32 for 265ms.. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (5126states) and FLOYD_HOARE automaton (currently 24 states, 25 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 32 for 265ms.. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (5126states) and FLOYD_HOARE automaton (currently 24 states, 25 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 32 for 265ms.. - TimeoutResultAtElement [Line: 59]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (5126states) and FLOYD_HOARE automaton (currently 24 states, 25 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 32 for 265ms.. - TimeoutResultAtElement [Line: 69]: 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 (5126states) and FLOYD_HOARE automaton (currently 24 states, 25 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 32 for 265ms.. - TimeoutResultAtElement [Line: 68]: 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 (5126states) and FLOYD_HOARE automaton (currently 24 states, 25 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 32 for 265ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 106 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 844354.6ms, OverallIterations: 86, TraceHistogramMax: 5, EmptinessCheckTime: 407.1ms, AutomataDifference: 715426.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7682.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3574 SDtfs, 14752 SDslu, 28327 SDs, 0 SdLazy, 28709 SolverSat, 4020 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 166837.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6672 GetRequests, 3050 SyntacticMatches, 5 SemanticMatches, 3616 ConstructedPredicates, 0 IntricatePredicates, 4 DeprecatedPredicates, 57973 ImplicationChecksByTransitivity, 579688.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5126occurred in iteration=85, InterpolantAutomatonStates: 3151, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 4388.7ms AutomataMinimizationTime, 85 MinimizatonAttempts, 36044 StatesRemovedByMinimization, 79 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 606.7ms SsaConstructionTime, 6368.8ms SatisfiabilityAnalysisTime, 65085.8ms InterpolantComputationTime, 1535 NumberOfCodeBlocks, 1513 NumberOfCodeBlocksAsserted, 193 NumberOfCheckSat, 2898 ConstructedInterpolants, 35 QuantifiedInterpolants, 15763 SizeOfPredicates, 282 NumberOfNonLiveVariables, 7186 ConjunctsInSsa, 930 ConjunctsInUnsatCore, 172 InterpolantComputations, 19 PerfectInterpolantSequences, 248/2026 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