/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-more-multiply-verify.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c503be2 [2021-10-13 21:20:59,466 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 21:20:59,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 21:20:59,533 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-13 21:20:59,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 21:20:59,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 21:20:59,552 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 21:20:59,554 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 21:20:59,555 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 21:20:59,557 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 21:20:59,559 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 21:20:59,561 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 21:20:59,563 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 21:20:59,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 21:20:59,595 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 21:20:59,596 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 21:20:59,613 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-13 21:20:59,625 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 21:20:59,629 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 21:20:59,630 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 21:20:59,633 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 21:20:59,634 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 21:20:59,635 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 21:20:59,636 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 21:20:59,636 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 21:20:59,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 21:20:59,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 21:20:59,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 21:20:59,641 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-13 21:20:59,670 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 21:20:59,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 21:20:59,671 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 21:20:59,671 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 21:20:59,673 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 21:20:59,673 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 21:20:59,673 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 21:20:59,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 21:20:59,674 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 21:20:59,674 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 21:20:59,675 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 21:20:59,675 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 21:20:59,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 21:20:59,675 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 21:20:59,676 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 21:20:59,676 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 21:20:59,676 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 21:20:59,676 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 21:20:59,677 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 21:20:59,677 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 21:20:59,677 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 21:20:59,678 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 21:20:59,678 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 21:20:59,678 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 21:20:59,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 21:20:59,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 21:20:59,679 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 21:20:59,679 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 21:20:59,679 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-13 21:20:59,680 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 21:20:59,680 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 21:20:59,680 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 21:20:59,681 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-13 21:21:00,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 21:21:00,131 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 21:21:00,135 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 21:21:00,137 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 21:21:00,138 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 21:21:00,139 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c [2021-10-13 21:21:00,239 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7cc0dc4fb/a214491d96b849f688f96056ac184bf7/FLAG27e3384cb [2021-10-13 21:21:00,906 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 21:21:00,907 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c [2021-10-13 21:21:00,919 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7cc0dc4fb/a214491d96b849f688f96056ac184bf7/FLAG27e3384cb [2021-10-13 21:21:01,258 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7cc0dc4fb/a214491d96b849f688f96056ac184bf7 [2021-10-13 21:21:01,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 21:21:01,269 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 21:21:01,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 21:21:01,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 21:21:01,282 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 21:21:01,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:21:01" (1/1) ... [2021-10-13 21:21:01,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a56bcbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:21:01, skipping insertion in model container [2021-10-13 21:21:01,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:21:01" (1/1) ... [2021-10-13 21:21:01,297 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 21:21:01,330 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 21:21:01,673 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-more-multiply-verify.wvr.c[2866,2879] [2021-10-13 21:21:01,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 21:21:01,729 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-13 21:21:01,745 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 21:21:01,792 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-more-multiply-verify.wvr.c[2866,2879] [2021-10-13 21:21:01,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 21:21:01,811 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 21:21:01,870 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-more-multiply-verify.wvr.c[2866,2879] [2021-10-13 21:21:01,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 21:21:01,902 INFO L208 MainTranslator]: Completed translation [2021-10-13 21:21:01,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:21:01 WrapperNode [2021-10-13 21:21:01,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 21:21:01,904 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 21:21:01,904 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 21:21:01,905 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 21:21:01,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:21:01" (1/1) ... [2021-10-13 21:21:01,929 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:21:01" (1/1) ... [2021-10-13 21:21:02,013 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 21:21:02,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 21:21:02,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 21:21:02,019 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 21:21:02,043 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:21:01" (1/1) ... [2021-10-13 21:21:02,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:21:01" (1/1) ... [2021-10-13 21:21:02,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:21:01" (1/1) ... [2021-10-13 21:21:02,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:21:01" (1/1) ... [2021-10-13 21:21:02,062 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:21:01" (1/1) ... [2021-10-13 21:21:02,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:21:01" (1/1) ... [2021-10-13 21:21:02,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:21:01" (1/1) ... [2021-10-13 21:21:02,074 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 21:21:02,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 21:21:02,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 21:21:02,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 21:21:02,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:21:01" (1/1) ... [2021-10-13 21:21:02,090 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 21:21:02,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 21:21:02,123 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) [2021-10-13 21:21:02,146 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 [2021-10-13 21:21:02,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 21:21:02,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 21:21:02,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 21:21:02,194 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-13 21:21:02,194 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-13 21:21:02,195 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-13 21:21:02,195 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-13 21:21:02,195 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-13 21:21:02,195 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-13 21:21:02,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-13 21:21:02,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-13 21:21:02,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 21:21:02,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 21:21:02,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 21:21:02,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 21:21:02,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 21:21:02,198 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 21:21:03,362 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 21:21:03,362 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2021-10-13 21:21:03,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:21:03 BoogieIcfgContainer [2021-10-13 21:21:03,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 21:21:03,367 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 21:21:03,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 21:21:03,371 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 21:21:03,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:21:01" (1/3) ... [2021-10-13 21:21:03,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62795e73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:21:03, skipping insertion in model container [2021-10-13 21:21:03,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:21:01" (2/3) ... [2021-10-13 21:21:03,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62795e73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:21:03, skipping insertion in model container [2021-10-13 21:21:03,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:21:03" (3/3) ... [2021-10-13 21:21:03,375 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-multiply-verify.wvr.c [2021-10-13 21:21:03,381 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 21:21:03,382 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2021-10-13 21:21:03,382 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 21:21:03,420 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,421 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,421 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,421 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,422 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,422 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,422 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,422 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,422 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,423 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,423 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,423 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,423 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,424 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,424 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,424 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,424 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,425 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,425 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,425 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,425 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,425 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,426 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,426 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,426 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,426 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,426 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,427 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,427 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,427 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,427 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,427 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,428 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,428 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,428 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,428 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,428 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,429 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,429 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,429 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,429 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,429 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,430 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,430 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,430 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,430 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,431 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,431 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,431 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,431 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,431 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,432 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,432 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,432 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,432 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,433 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,433 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,433 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,433 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,433 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,434 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,434 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,434 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,434 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,434 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,435 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,435 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,435 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,435 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,435 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,436 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,436 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,436 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,436 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,437 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,437 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,437 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,437 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,437 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,438 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,438 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,438 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,438 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,438 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,439 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,439 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,439 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,439 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,440 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,440 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,440 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,441 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,441 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,441 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,441 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,441 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,442 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,442 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,442 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,442 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,442 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,443 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,443 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,443 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,443 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,444 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,444 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,444 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,445 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,445 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,445 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,445 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,445 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,446 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,446 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,447 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,447 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,447 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,447 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,448 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,448 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,448 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,448 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,448 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,449 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,449 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,449 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,449 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,453 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,453 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,454 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,454 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,454 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,454 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,454 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,455 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,455 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,457 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,457 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,458 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,458 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,458 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,458 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,460 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,461 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,461 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,461 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,461 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,461 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,462 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,462 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,462 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:21:03,469 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-13 21:21:03,551 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 21:21:03,564 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 [2021-10-13 21:21:03,566 INFO L340 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2021-10-13 21:21:03,594 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 21:21:03,607 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 175 places, 176 transitions, 376 flow [2021-10-13 21:21:03,611 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 175 places, 176 transitions, 376 flow [2021-10-13 21:21:03,614 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 175 places, 176 transitions, 376 flow [2021-10-13 21:21:03,747 INFO L129 PetriNetUnfolder]: 11/173 cut-off events. [2021-10-13 21:21:03,747 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-13 21:21:03,757 INFO L84 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 173 events. 11/173 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 219 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 116. Up to 2 conditions per place. [2021-10-13 21:21:03,763 INFO L116 LiptonReduction]: Number of co-enabled transitions 3462 [2021-10-13 21:21:29,637 INFO L131 LiptonReduction]: Checked pairs total: 4160 [2021-10-13 21:21:29,638 INFO L133 LiptonReduction]: Total number of compositions: 175 [2021-10-13 21:21:29,648 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 56 places, 49 transitions, 122 flow [2021-10-13 21:21:29,704 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 874 states, 670 states have (on average 4.3059701492537314) internal successors, (2885), 873 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:21:29,709 INFO L276 IsEmpty]: Start isEmpty. Operand has 874 states, 670 states have (on average 4.3059701492537314) internal successors, (2885), 873 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:21:29,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-13 21:21:29,715 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:21:29,716 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-13 21:21:29,717 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 31 more)] === [2021-10-13 21:21:29,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:21:29,723 INFO L82 PathProgramCache]: Analyzing trace with hash 23640, now seen corresponding path program 1 times [2021-10-13 21:21:29,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:21:29,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2070425944] [2021-10-13 21:21:29,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:21:29,738 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:21:29,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:21:29,745 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) [2021-10-13 21:21:29,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 21:21:29,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:21:29,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 21:21:29,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:21:30,006 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-13 21:21:30,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 30 [2021-10-13 21:21:30,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:21:30,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:21:30,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:21:30,082 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:21:30,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2070425944] [2021-10-13 21:21:30,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2070425944] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:21:30,083 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:21:30,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-13 21:21:30,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581143222] [2021-10-13 21:21:30,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 21:21:30,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:21:30,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 21:21:30,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 21:21:30,141 INFO L87 Difference]: Start difference. First operand has 874 states, 670 states have (on average 4.3059701492537314) internal successors, (2885), 873 states have internal predecessors, (2885), 0 states have call successors, (0), 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 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:21:30,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:21:30,372 INFO L93 Difference]: Finished difference Result 748 states and 2440 transitions. [2021-10-13 21:21:30,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 21:21:30,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2021-10-13 21:21:30,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:21:30,402 INFO L225 Difference]: With dead ends: 748 [2021-10-13 21:21:30,402 INFO L226 Difference]: Without dead ends: 748 [2021-10-13 21:21:30,404 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 21:21:30,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2021-10-13 21:21:30,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 748. [2021-10-13 21:21:30,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 581 states have (on average 4.199655765920826) internal successors, (2440), 747 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:21:30,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 2440 transitions. [2021-10-13 21:21:30,539 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 2440 transitions. Word has length 2 [2021-10-13 21:21:30,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:21:30,540 INFO L470 AbstractCegarLoop]: Abstraction has 748 states and 2440 transitions. [2021-10-13 21:21:30,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:21:30,540 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 2440 transitions. [2021-10-13 21:21:30,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-13 21:21:30,541 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:21:30,541 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-13 21:21:30,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 21:21:30,759 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 [2021-10-13 21:21:30,760 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 31 more)] === [2021-10-13 21:21:30,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:21:30,761 INFO L82 PathProgramCache]: Analyzing trace with hash 23796, now seen corresponding path program 1 times [2021-10-13 21:21:30,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:21:30,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1209031262] [2021-10-13 21:21:30,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:21:30,763 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:21:30,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:21:30,768 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) [2021-10-13 21:21:30,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 21:21:30,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:21:30,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 21:21:30,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:21:30,987 INFO L354 Elim1Store]: treesize reduction 92, result has 21.4 percent of original size [2021-10-13 21:21:30,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 54 [2021-10-13 21:21:31,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:21:31,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:21:31,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:21:31,120 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:21:31,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1209031262] [2021-10-13 21:21:31,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1209031262] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:21:31,121 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:21:31,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 21:21:31,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458081257] [2021-10-13 21:21:31,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 21:21:31,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:21:31,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 21:21:31,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:21:31,125 INFO L87 Difference]: Start difference. First operand 748 states and 2440 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:21:31,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:21:31,314 INFO L93 Difference]: Finished difference Result 622 states and 1964 transitions. [2021-10-13 21:21:31,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 21:21:31,315 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 2 [2021-10-13 21:21:31,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:21:31,325 INFO L225 Difference]: With dead ends: 622 [2021-10-13 21:21:31,325 INFO L226 Difference]: Without dead ends: 622 [2021-10-13 21:21:31,326 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:21:31,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-10-13 21:21:31,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 622. [2021-10-13 21:21:31,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 492 states have (on average 3.991869918699187) internal successors, (1964), 621 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:21:31,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 1964 transitions. [2021-10-13 21:21:31,379 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 1964 transitions. Word has length 2 [2021-10-13 21:21:31,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:21:31,380 INFO L470 AbstractCegarLoop]: Abstraction has 622 states and 1964 transitions. [2021-10-13 21:21:31,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:21:31,380 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 1964 transitions. [2021-10-13 21:21:31,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-13 21:21:31,380 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:21:31,381 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-13 21:21:31,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 21:21:31,593 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 [2021-10-13 21:21:31,593 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 31 more)] === [2021-10-13 21:21:31,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:21:31,594 INFO L82 PathProgramCache]: Analyzing trace with hash 23797, now seen corresponding path program 1 times [2021-10-13 21:21:31,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:21:31,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [628964642] [2021-10-13 21:21:31,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:21:31,599 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:21:31,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:21:31,601 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) [2021-10-13 21:21:31,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 21:21:31,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:21:31,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 21:21:31,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:21:32,148 INFO L354 Elim1Store]: treesize reduction 233, result has 21.3 percent of original size [2021-10-13 21:21:32,149 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 5 case distinctions, treesize of input 55 treesize of output 101 [2021-10-13 21:21:32,191 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-13 21:21:32,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 100 [2021-10-13 21:21:33,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:21:33,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:21:33,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:21:33,978 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:21:33,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [628964642] [2021-10-13 21:21:33,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [628964642] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:21:33,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:21:33,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 21:21:33,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079148264] [2021-10-13 21:21:33,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 21:21:33,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:21:33,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 21:21:33,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:21:33,981 INFO L87 Difference]: Start difference. First operand 622 states and 1964 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:21:34,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:21:34,268 INFO L93 Difference]: Finished difference Result 496 states and 1488 transitions. [2021-10-13 21:21:34,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 21:21:34,270 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 2 [2021-10-13 21:21:34,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:21:34,275 INFO L225 Difference]: With dead ends: 496 [2021-10-13 21:21:34,276 INFO L226 Difference]: Without dead ends: 496 [2021-10-13 21:21:34,276 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:21:34,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2021-10-13 21:21:34,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 496. [2021-10-13 21:21:34,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 403 states have (on average 3.6923076923076925) internal successors, (1488), 495 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:21:34,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 1488 transitions. [2021-10-13 21:21:34,300 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 1488 transitions. Word has length 2 [2021-10-13 21:21:34,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:21:34,300 INFO L470 AbstractCegarLoop]: Abstraction has 496 states and 1488 transitions. [2021-10-13 21:21:34,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:21:34,301 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 1488 transitions. [2021-10-13 21:21:34,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-13 21:21:34,301 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:21:34,301 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-13 21:21:34,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 21:21:34,513 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 [2021-10-13 21:21:34,513 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 31 more)] === [2021-10-13 21:21:34,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:21:34,515 INFO L82 PathProgramCache]: Analyzing trace with hash 23638, now seen corresponding path program 1 times [2021-10-13 21:21:34,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:21:34,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1859389312] [2021-10-13 21:21:34,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:21:34,516 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:21:34,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:21:34,531 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) [2021-10-13 21:21:34,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 21:21:34,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:21:34,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 21:21:34,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:21:34,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:21:34,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:21:34,946 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-13 21:21:34,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-13 21:21:35,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:21:35,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:21:35,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:21:35,236 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:21:35,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1859389312] [2021-10-13 21:21:35,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1859389312] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:21:35,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:21:35,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 21:21:35,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631531059] [2021-10-13 21:21:35,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 21:21:35,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:21:35,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 21:21:35,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:21:35,238 INFO L87 Difference]: Start difference. First operand 496 states and 1488 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:21:35,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:21:35,843 INFO L93 Difference]: Finished difference Result 991 states and 2976 transitions. [2021-10-13 21:21:35,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 21:21:35,845 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 2 [2021-10-13 21:21:35,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:21:35,854 INFO L225 Difference]: With dead ends: 991 [2021-10-13 21:21:35,854 INFO L226 Difference]: Without dead ends: 991 [2021-10-13 21:21:35,854 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 160.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:21:35,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2021-10-13 21:21:35,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 498. [2021-10-13 21:21:35,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 405 states have (on average 3.6839506172839505) internal successors, (1492), 497 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:21:35,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 1492 transitions. [2021-10-13 21:21:35,884 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 1492 transitions. Word has length 2 [2021-10-13 21:21:35,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:21:35,885 INFO L470 AbstractCegarLoop]: Abstraction has 498 states and 1492 transitions. [2021-10-13 21:21:35,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:21:35,885 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 1492 transitions. [2021-10-13 21:21:35,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 21:21:35,886 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:21:35,886 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-13 21:21:35,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 21:21:36,100 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 [2021-10-13 21:21:36,101 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 31 more)] === [2021-10-13 21:21:36,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:21:36,101 INFO L82 PathProgramCache]: Analyzing trace with hash 22855510, now seen corresponding path program 1 times [2021-10-13 21:21:36,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:21:36,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1601040870] [2021-10-13 21:21:36,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:21:36,102 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:21:36,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:21:36,104 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) [2021-10-13 21:21:36,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 21:21:36,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:21:36,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 21:21:36,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:21:36,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:21:36,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:21:36,565 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-13 21:21:36,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-13 21:21:36,753 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:21:36,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:21:37,254 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:21:37,255 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:21:37,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1601040870] [2021-10-13 21:21:37,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1601040870] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:21:37,256 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:21:37,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-13 21:21:37,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497895032] [2021-10-13 21:21:37,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 21:21:37,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:21:37,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 21:21:37,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 21:21:37,258 INFO L87 Difference]: Start difference. First operand 498 states and 1492 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:21:39,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:21:39,342 INFO L93 Difference]: Finished difference Result 2967 states and 8920 transitions. [2021-10-13 21:21:39,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 21:21:39,343 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 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 4 [2021-10-13 21:21:39,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:21:39,371 INFO L225 Difference]: With dead ends: 2967 [2021-10-13 21:21:39,371 INFO L226 Difference]: Without dead ends: 2967 [2021-10-13 21:21:39,372 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 832.1ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-13 21:21:39,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2967 states. [2021-10-13 21:21:39,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2967 to 502. [2021-10-13 21:21:39,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 409 states have (on average 3.667481662591687) internal successors, (1500), 501 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:21:39,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 1500 transitions. [2021-10-13 21:21:39,419 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 1500 transitions. Word has length 4 [2021-10-13 21:21:39,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:21:39,419 INFO L470 AbstractCegarLoop]: Abstraction has 502 states and 1500 transitions. [2021-10-13 21:21:39,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:21:39,420 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 1500 transitions. [2021-10-13 21:21:39,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 21:21:39,420 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:21:39,420 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 21:21:39,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 21:21:39,633 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 [2021-10-13 21:21:39,633 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 31 more)] === [2021-10-13 21:21:39,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:21:39,634 INFO L82 PathProgramCache]: Analyzing trace with hash 22887054, now seen corresponding path program 1 times [2021-10-13 21:21:39,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:21:39,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1889746913] [2021-10-13 21:21:39,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:21:39,636 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:21:39,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:21:39,637 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) [2021-10-13 21:21:39,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 21:21:39,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:21:39,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 21:21:39,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:21:39,773 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-13 21:21:39,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 45 [2021-10-13 21:21:39,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:21:39,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:21:39,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:21:39,977 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:21:39,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1889746913] [2021-10-13 21:21:39,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1889746913] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:21:39,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:21:39,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 21:21:39,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835127874] [2021-10-13 21:21:39,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 21:21:39,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:21:39,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 21:21:39,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:21:39,980 INFO L87 Difference]: Start difference. First operand 502 states and 1500 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:21:40,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:21:40,136 INFO L93 Difference]: Finished difference Result 472 states and 1420 transitions. [2021-10-13 21:21:40,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 21:21:40,136 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 4 [2021-10-13 21:21:40,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:21:40,142 INFO L225 Difference]: With dead ends: 472 [2021-10-13 21:21:40,143 INFO L226 Difference]: Without dead ends: 472 [2021-10-13 21:21:40,143 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:21:40,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-10-13 21:21:40,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 472. [2021-10-13 21:21:40,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 394 states have (on average 3.6040609137055837) internal successors, (1420), 471 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:21:40,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 1420 transitions. [2021-10-13 21:21:40,181 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 1420 transitions. Word has length 4 [2021-10-13 21:21:40,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:21:40,181 INFO L470 AbstractCegarLoop]: Abstraction has 472 states and 1420 transitions. [2021-10-13 21:21:40,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:21:40,182 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 1420 transitions. [2021-10-13 21:21:40,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 21:21:40,182 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:21:40,182 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 21:21:40,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 21:21:40,399 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 [2021-10-13 21:21:40,400 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 31 more)] === [2021-10-13 21:21:40,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:21:40,401 INFO L82 PathProgramCache]: Analyzing trace with hash 22887056, now seen corresponding path program 1 times [2021-10-13 21:21:40,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:21:40,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1265164287] [2021-10-13 21:21:40,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:21:40,403 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:21:40,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:21:40,404 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) [2021-10-13 21:21:40,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 21:21:40,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:21:40,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 21:21:40,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:21:40,818 INFO L354 Elim1Store]: treesize reduction 233, result has 21.3 percent of original size [2021-10-13 21:21:40,819 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 5 case distinctions, treesize of input 45 treesize of output 91 [2021-10-13 21:21:40,834 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 93 treesize of output 91 [2021-10-13 21:21:43,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:21:43,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:21:43,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:21:43,794 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:21:43,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1265164287] [2021-10-13 21:21:43,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1265164287] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:21:43,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:21:43,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 21:21:43,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649682077] [2021-10-13 21:21:43,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 21:21:43,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:21:43,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 21:21:43,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:21:43,797 INFO L87 Difference]: Start difference. First operand 472 states and 1420 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:21:44,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:21:44,117 INFO L93 Difference]: Finished difference Result 442 states and 1340 transitions. [2021-10-13 21:21:44,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 21:21:44,118 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 4 [2021-10-13 21:21:44,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:21:44,122 INFO L225 Difference]: With dead ends: 442 [2021-10-13 21:21:44,122 INFO L226 Difference]: Without dead ends: 442 [2021-10-13 21:21:44,123 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:21:44,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2021-10-13 21:21:44,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 442. [2021-10-13 21:21:44,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 379 states have (on average 3.5356200527704487) internal successors, (1340), 441 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:21:44,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1340 transitions. [2021-10-13 21:21:44,140 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1340 transitions. Word has length 4 [2021-10-13 21:21:44,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:21:44,140 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 1340 transitions. [2021-10-13 21:21:44,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:21:44,141 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1340 transitions. [2021-10-13 21:21:44,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 21:21:44,141 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:21:44,141 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 21:21:44,164 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 21:21:44,356 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 [2021-10-13 21:21:44,356 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 31 more)] === [2021-10-13 21:21:44,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:21:44,358 INFO L82 PathProgramCache]: Analyzing trace with hash 709496060, now seen corresponding path program 1 times [2021-10-13 21:21:44,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:21:44,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [946571296] [2021-10-13 21:21:44,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:21:44,359 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:21:44,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:21:44,361 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) [2021-10-13 21:21:44,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 21:21:44,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:21:44,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 21:21:44,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:21:44,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:21:44,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:21:44,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:21:44,539 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:21:44,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [946571296] [2021-10-13 21:21:44,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [946571296] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:21:44,540 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:21:44,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-13 21:21:44,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945433452] [2021-10-13 21:21:44,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 21:21:44,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:21:44,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 21:21:44,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 21:21:44,541 INFO L87 Difference]: Start difference. First operand 442 states and 1340 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2021-10-13 21:21:44,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:21:44,793 INFO L93 Difference]: Finished difference Result 471 states and 1417 transitions. [2021-10-13 21:21:44,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 21:21:44,794 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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 [2021-10-13 21:21:44,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:21:44,798 INFO L225 Difference]: With dead ends: 471 [2021-10-13 21:21:44,798 INFO L226 Difference]: Without dead ends: 459 [2021-10-13 21:21:44,799 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.7ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-13 21:21:44,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2021-10-13 21:21:44,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 459. [2021-10-13 21:21:44,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 396 states have (on average 3.4873737373737375) internal successors, (1381), 458 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:21:44,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 1381 transitions. [2021-10-13 21:21:44,816 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 1381 transitions. Word has length 5 [2021-10-13 21:21:44,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:21:44,816 INFO L470 AbstractCegarLoop]: Abstraction has 459 states and 1381 transitions. [2021-10-13 21:21:44,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2021-10-13 21:21:44,816 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 1381 transitions. [2021-10-13 21:21:44,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 21:21:44,817 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:21:44,817 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 21:21:44,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 21:21:45,029 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 [2021-10-13 21:21:45,030 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 31 more)] === [2021-10-13 21:21:45,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:21:45,031 INFO L82 PathProgramCache]: Analyzing trace with hash 490418916, now seen corresponding path program 1 times [2021-10-13 21:21:45,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:21:45,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [960209458] [2021-10-13 21:21:45,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:21:45,032 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:21:45,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:21:45,034 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) [2021-10-13 21:21:45,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 21:21:45,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:21:45,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 21:21:45,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:21:45,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:21:45,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:21:45,455 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-13 21:21:45,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-13 21:21:45,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:21:45,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:21:46,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:21:46,533 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:21:46,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [960209458] [2021-10-13 21:21:46,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [960209458] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:21:46,533 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:21:46,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-13 21:21:46,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659465203] [2021-10-13 21:21:46,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 21:21:46,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:21:46,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 21:21:46,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-13 21:21:46,535 INFO L87 Difference]: Start difference. First operand 459 states and 1381 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:21:49,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:21:49,438 INFO L93 Difference]: Finished difference Result 871 states and 2577 transitions. [2021-10-13 21:21:49,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 21:21:49,440 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 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 6 [2021-10-13 21:21:49,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:21:49,446 INFO L225 Difference]: With dead ends: 871 [2021-10-13 21:21:49,446 INFO L226 Difference]: Without dead ends: 870 [2021-10-13 21:21:49,446 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1297.4ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-10-13 21:21:49,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2021-10-13 21:21:49,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 740. [2021-10-13 21:21:49,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 672 states have (on average 3.5267857142857144) internal successors, (2370), 739 states have internal predecessors, (2370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:21:49,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 2370 transitions. [2021-10-13 21:21:49,477 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 2370 transitions. Word has length 6 [2021-10-13 21:21:49,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:21:49,477 INFO L470 AbstractCegarLoop]: Abstraction has 740 states and 2370 transitions. [2021-10-13 21:21:49,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:21:49,478 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 2370 transitions. [2021-10-13 21:21:49,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 21:21:49,478 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:21:49,479 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 21:21:49,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 21:21:49,691 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 [2021-10-13 21:21:49,691 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 31 more)] === [2021-10-13 21:21:49,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:21:49,692 INFO L82 PathProgramCache]: Analyzing trace with hash 490418917, now seen corresponding path program 1 times [2021-10-13 21:21:49,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:21:49,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [194150730] [2021-10-13 21:21:49,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:21:49,693 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:21:49,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:21:49,694 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) [2021-10-13 21:21:49,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 21:21:49,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:21:49,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 21:21:49,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:21:49,861 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-13 21:21:49,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 30 [2021-10-13 21:21:49,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 21:21:49,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:21:49,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 21:21:49,949 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:21:49,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [194150730] [2021-10-13 21:21:49,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [194150730] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:21:49,951 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:21:49,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 21:21:49,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768030475] [2021-10-13 21:21:49,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 21:21:49,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:21:49,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 21:21:49,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:21:49,953 INFO L87 Difference]: Start difference. First operand 740 states and 2370 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) [2021-10-13 21:21:50,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:21:50,148 INFO L93 Difference]: Finished difference Result 448 states and 1338 transitions. [2021-10-13 21:21:50,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 21:21:50,149 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 6 [2021-10-13 21:21:50,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:21:50,156 INFO L225 Difference]: With dead ends: 448 [2021-10-13 21:21:50,156 INFO L226 Difference]: Without dead ends: 448 [2021-10-13 21:21:50,160 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 21:21:50,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-10-13 21:21:50,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 448. [2021-10-13 21:21:50,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 419 states have (on average 3.1933174224343674) internal successors, (1338), 447 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:21:50,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 1338 transitions. [2021-10-13 21:21:50,179 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 1338 transitions. Word has length 6 [2021-10-13 21:21:50,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:21:50,180 INFO L470 AbstractCegarLoop]: Abstraction has 448 states and 1338 transitions. [2021-10-13 21:21:50,180 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) [2021-10-13 21:21:50,180 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 1338 transitions. [2021-10-13 21:21:50,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 21:21:50,181 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:21:50,182 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 21:21:50,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 21:21:50,394 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 [2021-10-13 21:21:50,395 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 31 more)] === [2021-10-13 21:21:50,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:21:50,396 INFO L82 PathProgramCache]: Analyzing trace with hash 519640664, now seen corresponding path program 1 times [2021-10-13 21:21:50,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:21:50,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1358404869] [2021-10-13 21:21:50,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:21:50,397 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:21:50,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:21:50,398 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) [2021-10-13 21:21:50,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 21:21:50,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:21:50,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 21:21:50,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:21:50,541 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-13 21:21:50,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 30 [2021-10-13 21:21:50,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:21:50,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:21:50,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:21:50,601 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:21:50,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1358404869] [2021-10-13 21:21:50,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1358404869] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:21:50,602 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:21:50,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-13 21:21:50,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863776070] [2021-10-13 21:21:50,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 21:21:50,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:21:50,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 21:21:50,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 21:21:50,604 INFO L87 Difference]: Start difference. First operand 448 states and 1338 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2021-10-13 21:21:50,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:21:50,699 INFO L93 Difference]: Finished difference Result 415 states and 1235 transitions. [2021-10-13 21:21:50,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 21:21:50,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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 6 [2021-10-13 21:21:50,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:21:50,704 INFO L225 Difference]: With dead ends: 415 [2021-10-13 21:21:50,704 INFO L226 Difference]: Without dead ends: 415 [2021-10-13 21:21:50,704 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 21:21:50,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2021-10-13 21:21:50,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2021-10-13 21:21:50,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 394 states have (on average 3.1345177664974617) internal successors, (1235), 414 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:21:50,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 1235 transitions. [2021-10-13 21:21:50,719 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 1235 transitions. Word has length 6 [2021-10-13 21:21:50,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:21:50,719 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 1235 transitions. [2021-10-13 21:21:50,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2021-10-13 21:21:50,720 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 1235 transitions. [2021-10-13 21:21:50,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 21:21:50,721 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:21:50,721 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 21:21:50,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-13 21:21:50,933 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 [2021-10-13 21:21:50,934 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 31 more)] === [2021-10-13 21:21:50,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:21:50,934 INFO L82 PathProgramCache]: Analyzing trace with hash 519640666, now seen corresponding path program 1 times [2021-10-13 21:21:50,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:21:50,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [295377304] [2021-10-13 21:21:50,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:21:50,936 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:21:50,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:21:50,937 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) [2021-10-13 21:21:50,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 21:21:51,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:21:51,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 21:21:51,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:21:51,283 INFO L354 Elim1Store]: treesize reduction 241, result has 18.6 percent of original size [2021-10-13 21:21:51,283 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 5 case distinctions, treesize of input 40 treesize of output 78 [2021-10-13 21:21:51,289 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 81 treesize of output 79 [2021-10-13 21:21:53,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:21:53,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:21:54,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:21:54,044 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:21:54,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [295377304] [2021-10-13 21:21:54,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [295377304] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:21:54,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:21:54,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 21:21:54,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848013520] [2021-10-13 21:21:54,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 21:21:54,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:21:54,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 21:21:54,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:21:54,046 INFO L87 Difference]: Start difference. First operand 415 states and 1235 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:21:54,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:21:54,207 INFO L93 Difference]: Finished difference Result 382 states and 1132 transitions. [2021-10-13 21:21:54,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 21:21:54,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 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 6 [2021-10-13 21:21:54,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:21:54,211 INFO L225 Difference]: With dead ends: 382 [2021-10-13 21:21:54,211 INFO L226 Difference]: Without dead ends: 323 [2021-10-13 21:21:54,212 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2049.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:21:54,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-10-13 21:21:54,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2021-10-13 21:21:54,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 310 states have (on average 3.1870967741935483) internal successors, (988), 322 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:21:54,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 988 transitions. [2021-10-13 21:21:54,223 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 988 transitions. Word has length 6 [2021-10-13 21:21:54,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:21:54,223 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 988 transitions. [2021-10-13 21:21:54,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:21:54,223 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 988 transitions. [2021-10-13 21:21:54,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 21:21:54,224 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:21:54,224 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1] [2021-10-13 21:21:54,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-13 21:21:54,436 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 [2021-10-13 21:21:54,437 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 31 more)] === [2021-10-13 21:21:54,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:21:54,438 INFO L82 PathProgramCache]: Analyzing trace with hash -2086714026, now seen corresponding path program 2 times [2021-10-13 21:21:54,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:21:54,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1999121732] [2021-10-13 21:21:54,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:21:54,440 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:21:54,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:21:54,441 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) [2021-10-13 21:21:54,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-13 21:21:54,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 21:21:54,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:21:54,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:21:54,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:21:54,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:21:54,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:21:54,846 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-13 21:21:54,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-13 21:21:55,200 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:21:55,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:21:56,838 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:21:56,839 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:21:56,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1999121732] [2021-10-13 21:21:56,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1999121732] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:21:56,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:21:56,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-13 21:21:56,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801487074] [2021-10-13 21:21:56,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 21:21:56,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:21:56,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 21:21:56,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-10-13 21:21:56,841 INFO L87 Difference]: Start difference. First operand 323 states and 988 transitions. Second operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 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) [2021-10-13 21:22:04,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:22:04,803 INFO L93 Difference]: Finished difference Result 2389 states and 7126 transitions. [2021-10-13 21:22:04,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:22:04,804 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 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 8 [2021-10-13 21:22:04,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:22:04,821 INFO L225 Difference]: With dead ends: 2389 [2021-10-13 21:22:04,821 INFO L226 Difference]: Without dead ends: 2389 [2021-10-13 21:22:04,822 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 5954.7ms TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2021-10-13 21:22:04,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2021-10-13 21:22:04,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 331. [2021-10-13 21:22:04,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 318 states have (on average 3.157232704402516) internal successors, (1004), 330 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:22:04,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 1004 transitions. [2021-10-13 21:22:04,853 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 1004 transitions. Word has length 8 [2021-10-13 21:22:04,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:22:04,853 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 1004 transitions. [2021-10-13 21:22:04,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 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) [2021-10-13 21:22:04,855 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 1004 transitions. [2021-10-13 21:22:04,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 21:22:04,856 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:22:04,857 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2021-10-13 21:22:04,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-13 21:22:05,069 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 [2021-10-13 21:22:05,069 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 31 more)] === [2021-10-13 21:22:05,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:22:05,070 INFO L82 PathProgramCache]: Analyzing trace with hash -262650116, now seen corresponding path program 2 times [2021-10-13 21:22:05,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:22:05,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1329040270] [2021-10-13 21:22:05,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:22:05,071 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:22:05,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:22:05,072 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) [2021-10-13 21:22:05,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-13 21:22:05,176 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:22:05,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:22:05,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:22:05,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:22:05,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:22:05,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:22:05,477 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-13 21:22:05,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-13 21:22:05,645 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-13 21:22:05,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:22:06,706 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-13 21:22:06,706 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:22:06,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1329040270] [2021-10-13 21:22:06,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1329040270] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:22:06,707 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:22:06,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-13 21:22:06,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561303693] [2021-10-13 21:22:06,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 21:22:06,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:22:06,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 21:22:06,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 21:22:06,709 INFO L87 Difference]: Start difference. First operand 331 states and 1004 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:22:07,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:22:07,002 INFO L93 Difference]: Finished difference Result 159 states and 436 transitions. [2021-10-13 21:22:07,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 21:22:07,003 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 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 9 [2021-10-13 21:22:07,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:22:07,004 INFO L225 Difference]: With dead ends: 159 [2021-10-13 21:22:07,004 INFO L226 Difference]: Without dead ends: 159 [2021-10-13 21:22:07,005 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 233.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 21:22:07,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-10-13 21:22:07,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 96. [2021-10-13 21:22:07,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 94 states have (on average 2.5851063829787235) internal successors, (243), 95 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:22:07,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 243 transitions. [2021-10-13 21:22:07,009 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 243 transitions. Word has length 9 [2021-10-13 21:22:07,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:22:07,010 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 243 transitions. [2021-10-13 21:22:07,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:22:07,010 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 243 transitions. [2021-10-13 21:22:07,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 21:22:07,017 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:22:07,017 INFO L512 BasicCegarLoop]: trace histogram [14, 1, 1] [2021-10-13 21:22:07,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-13 21:22:07,221 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 [2021-10-13 21:22:07,222 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 31 more)] === [2021-10-13 21:22:07,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:22:07,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1737183574, now seen corresponding path program 3 times [2021-10-13 21:22:07,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:22:07,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1699907515] [2021-10-13 21:22:07,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 21:22:07,224 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:22:07,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:22:07,225 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) [2021-10-13 21:22:07,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-13 21:22:07,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-13 21:22:07,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:22:07,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 21:22:07,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:22:07,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:22:07,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:22:07,846 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-13 21:22:07,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-13 21:22:08,655 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:22:08,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:22:14,112 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:22:14,113 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:22:14,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1699907515] [2021-10-13 21:22:14,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1699907515] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:22:14,113 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:22:14,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2021-10-13 21:22:14,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737720174] [2021-10-13 21:22:14,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-13 21:22:14,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:22:14,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-13 21:22:14,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2021-10-13 21:22:14,115 INFO L87 Difference]: Start difference. First operand 96 states and 243 transitions. Second operand has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 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) [2021-10-13 21:22:24,900 WARN L207 SmtUtils]: Spent 7.87 s on a formula simplification that was a NOOP. DAG size: 168 [2021-10-13 21:22:32,303 WARN L207 SmtUtils]: Spent 6.56 s on a formula simplification that was a NOOP. DAG size: 157 [2021-10-13 21:22:38,346 WARN L207 SmtUtils]: Spent 5.25 s on a formula simplification that was a NOOP. DAG size: 146 [2021-10-13 21:22:44,663 WARN L207 SmtUtils]: Spent 5.39 s on a formula simplification that was a NOOP. DAG size: 136 [2021-10-13 21:23:13,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:23:13,006 INFO L93 Difference]: Finished difference Result 2245 states and 6026 transitions. [2021-10-13 21:23:13,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 21:23:13,012 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 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 16 [2021-10-13 21:23:13,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:23:13,033 INFO L225 Difference]: With dead ends: 2245 [2021-10-13 21:23:13,034 INFO L226 Difference]: Without dead ends: 2245 [2021-10-13 21:23:13,035 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 54023.2ms TimeCoverageRelationStatistics Valid=734, Invalid=1336, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 21:23:13,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2245 states. [2021-10-13 21:23:13,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2245 to 112. [2021-10-13 21:23:13,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 110 states have (on average 2.5) internal successors, (275), 111 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:23:13,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 275 transitions. [2021-10-13 21:23:13,056 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 275 transitions. Word has length 16 [2021-10-13 21:23:13,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:23:13,056 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 275 transitions. [2021-10-13 21:23:13,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 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) [2021-10-13 21:23:13,057 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 275 transitions. [2021-10-13 21:23:13,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 21:23:13,058 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:23:13,058 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:23:13,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-13 21:23:13,272 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 [2021-10-13 21:23:13,272 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 31 more)] === [2021-10-13 21:23:13,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:23:13,273 INFO L82 PathProgramCache]: Analyzing trace with hash 298997944, now seen corresponding path program 1 times [2021-10-13 21:23:13,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:23:13,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1170784603] [2021-10-13 21:23:13,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:23:13,274 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:23:13,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:23:13,275 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) [2021-10-13 21:23:13,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-13 21:23:13,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:23:13,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 21:23:13,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:23:13,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 21:23:13,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:23:13,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 21:23:13,651 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:23:13,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1170784603] [2021-10-13 21:23:13,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1170784603] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:23:13,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:23:13,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-13 21:23:13,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078669138] [2021-10-13 21:23:13,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 21:23:13,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:23:13,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 21:23:13,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 21:23:13,653 INFO L87 Difference]: Start difference. First operand 112 states and 275 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 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) [2021-10-13 21:23:13,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:23:13,725 INFO L93 Difference]: Finished difference Result 92 states and 201 transitions. [2021-10-13 21:23:13,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 21:23:13,727 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 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 21 [2021-10-13 21:23:13,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:23:13,727 INFO L225 Difference]: With dead ends: 92 [2021-10-13 21:23:13,727 INFO L226 Difference]: Without dead ends: 92 [2021-10-13 21:23:13,728 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 37.5ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 21:23:13,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-13 21:23:13,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-10-13 21:23:13,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 90 states have (on average 2.2333333333333334) internal successors, (201), 91 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:23:13,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 201 transitions. [2021-10-13 21:23:13,730 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 201 transitions. Word has length 21 [2021-10-13 21:23:13,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:23:13,731 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 201 transitions. [2021-10-13 21:23:13,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 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) [2021-10-13 21:23:13,731 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 201 transitions. [2021-10-13 21:23:13,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 21:23:13,732 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:23:13,732 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:23:13,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-13 21:23:13,945 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 [2021-10-13 21:23:13,946 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 31 more)] === [2021-10-13 21:23:13,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:23:13,947 INFO L82 PathProgramCache]: Analyzing trace with hash -739639454, now seen corresponding path program 2 times [2021-10-13 21:23:13,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:23:13,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [109100948] [2021-10-13 21:23:13,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:23:13,948 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:23:13,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:23:13,949 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) [2021-10-13 21:23:13,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-13 21:23:14,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:23:14,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:23:14,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-13 21:23:14,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:23:14,268 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 20 treesize of output 18 [2021-10-13 21:23:14,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:23:14,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:23:14,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:23:14,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:23:14,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:23:14,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:23:15,313 INFO L354 Elim1Store]: treesize reduction 1157, result has 6.2 percent of original size [2021-10-13 21:23:15,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 81 treesize of output 101 [2021-10-13 21:23:19,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:23:19,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:23:19,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:23:19,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:23:19,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:23:19,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:28:01,095 WARN L207 SmtUtils]: Spent 4.69 m on a formula simplification. DAG size of input: 351 DAG size of output: 127 [2021-10-13 21:28:01,097 INFO L354 Elim1Store]: treesize reduction 1950, result has 18.2 percent of original size [2021-10-13 21:28:01,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 39 case distinctions, treesize of input 123 treesize of output 480 [2021-10-13 21:31:26,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-13 21:31:26,014 WARN L228 Executor]: External (MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-13 21:31:26,016 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:31:26,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [109100948] [2021-10-13 21:31:26,017 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-10-13 21:31:26,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [297099818] [2021-10-13 21:31:26,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:31:26,018 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 21:31:26,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 [2021-10-13 21:31:26,019 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 21:31:26,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-10-13 21:31:26,755 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:31:26,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:31:26,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-13 21:31:26,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:31:26,766 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-13 21:31:26,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375134057] [2021-10-13 21:31:26,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:31:26,766 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 21:31:26,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 21:31:26,773 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 21:31:26,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process Received shutdown request... [2021-10-13 21:35:26,181 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-13 21:35:26,215 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-13 21:35:26,215 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-13 21:35:27,242 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2021-10-13 21:35:27,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-13 21:35:27,382 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forcibly destroying the process [2021-10-13 21:35:27,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 137 [2021-10-13 21:35:27,435 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 21:35:27,435 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:35:27,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-13 21:35:27,435 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-13 21:35:27,435 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-13 21:35:27,442 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 21:35:27,460 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0REQUIRES_VIOLATION [2021-10-13 21:35:27,460 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1REQUIRES_VIOLATION [2021-10-13 21:35:27,460 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATION [2021-10-13 21:35:27,460 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATION [2021-10-13 21:35:27,460 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0REQUIRES_VIOLATION [2021-10-13 21:35:27,461 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1REQUIRES_VIOLATION [2021-10-13 21:35:27,461 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err2REQUIRES_VIOLATION [2021-10-13 21:35:27,461 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err3REQUIRES_VIOLATION [2021-10-13 21:35:27,461 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-13 21:35:27,461 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-13 21:35:27,461 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-13 21:35:27,461 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-13 21:35:27,462 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-13 21:35:27,462 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-13 21:35:27,462 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-13 21:35:27,462 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-13 21:35:27,462 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-13 21:35:27,462 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-13 21:35:27,462 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-13 21:35:27,463 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-13 21:35:27,463 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-13 21:35:27,463 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-13 21:35:27,463 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 21:35:27,464 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 21:35:27,464 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 21:35:27,464 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-13 21:35:27,464 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0REQUIRES_VIOLATION [2021-10-13 21:35:27,465 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1REQUIRES_VIOLATION [2021-10-13 21:35:27,465 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATION [2021-10-13 21:35:27,465 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATION [2021-10-13 21:35:27,465 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0REQUIRES_VIOLATION [2021-10-13 21:35:27,465 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1REQUIRES_VIOLATION [2021-10-13 21:35:27,465 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err2REQUIRES_VIOLATION [2021-10-13 21:35:27,465 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err3REQUIRES_VIOLATION [2021-10-13 21:35:27,474 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 21:35:27,474 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 21:35:27,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 09:35:27 BasicIcfg [2021-10-13 21:35:27,514 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 21:35:27,515 INFO L168 Benchmark]: Toolchain (without parser) took 866252.46 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 135.3 MB in the beginning and 150.4 MB in the end (delta: -15.1 MB). Peak memory consumption was 122.7 MB. Max. memory is 8.0 GB. [2021-10-13 21:35:27,516 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 153.1 MB. Free memory is still 126.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-13 21:35:27,516 INFO L168 Benchmark]: CACSL2BoogieTranslator took 633.43 ms. Allocated memory is still 153.1 MB. Free memory was 135.0 MB in the beginning and 121.7 MB in the end (delta: 13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-10-13 21:35:27,516 INFO L168 Benchmark]: Boogie Procedure Inliner took 108.80 ms. Allocated memory is still 153.1 MB. Free memory was 121.7 MB in the beginning and 136.3 MB in the end (delta: -14.6 MB). Peak memory consumption was 5.3 MB. Max. memory is 8.0 GB. [2021-10-13 21:35:27,517 INFO L168 Benchmark]: Boogie Preprocessor took 55.50 ms. Allocated memory is still 153.1 MB. Free memory was 136.3 MB in the beginning and 134.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-13 21:35:27,517 INFO L168 Benchmark]: RCFGBuilder took 1290.26 ms. Allocated memory is still 153.1 MB. Free memory was 134.2 MB in the beginning and 105.1 MB in the end (delta: 29.1 MB). Peak memory consumption was 29.4 MB. Max. memory is 8.0 GB. [2021-10-13 21:35:27,518 INFO L168 Benchmark]: TraceAbstraction took 864147.28 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 104.5 MB in the beginning and 150.4 MB in the end (delta: -46.0 MB). Peak memory consumption was 92.3 MB. Max. memory is 8.0 GB. [2021-10-13 21:35:27,525 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 153.1 MB. Free memory is still 126.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 633.43 ms. Allocated memory is still 153.1 MB. Free memory was 135.0 MB in the beginning and 121.7 MB in the end (delta: 13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 108.80 ms. Allocated memory is still 153.1 MB. Free memory was 121.7 MB in the beginning and 136.3 MB in the end (delta: -14.6 MB). Peak memory consumption was 5.3 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 55.50 ms. Allocated memory is still 153.1 MB. Free memory was 136.3 MB in the beginning and 134.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1290.26 ms. Allocated memory is still 153.1 MB. Free memory was 134.2 MB in the beginning and 105.1 MB in the end (delta: 29.1 MB). Peak memory consumption was 29.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 864147.28 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 104.5 MB in the beginning and 150.4 MB in the end (delta: -46.0 MB). Peak memory consumption was 92.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 26026.7ms, 175 PlacesBefore, 56 PlacesAfterwards, 176 TransitionsBefore, 49 TransitionsAfterwards, 3462 CoEnabledTransitionPairs, 7 FixpointIterations, 83 TrivialSequentialCompositions, 73 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 3 ConcurrentYvCompositions, 8 ChoiceCompositions, 175 TotalNumberOfCompositions, 4160 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3519, positive: 3465, positive conditional: 0, positive unconditional: 3465, negative: 54, negative conditional: 0, negative unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1975, positive: 1957, positive conditional: 0, positive unconditional: 1957, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1975, positive: 1956, positive conditional: 0, positive unconditional: 1956, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 19, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 527, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 524, negative conditional: 0, negative unconditional: 524, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3519, positive: 1508, positive conditional: 0, positive unconditional: 1508, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 1975, unknown conditional: 0, unknown unconditional: 1975] , Statistics on independence cache: Total cache size (in pairs): 82, Positive cache size: 76, Positive conditional cache size: 0, Positive unconditional cache size: 76, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - 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 - UnprovableResult [Line: 104]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: unable to decide satisfiability of path constraint, overapproximation of memtrack at line 104. Possible FailurePath: [L42] 0 unsigned int *queue; [L43] 0 unsigned int A, B; [L44] 0 int n, start, end; [L45] 0 _Bool ok; [L86] 0 pthread_t t1, t2, t3; [L88] 0 A = __VERIFIER_nondet_uint() [L89] 0 B = __VERIFIER_nondet_uint() [L90] 0 n = __VERIFIER_nondet_int() [L91] 0 start = __VERIFIER_nondet_int() [L92] 0 end = start [L39] COND TRUE 0 !cond [L39] COND TRUE 0 !cond [L113] 0 unsigned int* arr = (unsigned int*)malloc(sizeof(unsigned int) * (size_t)size); [L114] 0 int i = 0; [L114] COND TRUE 0 i < size [L115] 0 arr[i] = __VERIFIER_nondet_int() [L114] 0 i++ [L114] COND TRUE 0 i < size [L115] 0 arr[i] = __VERIFIER_nondet_int() [L114] 0 i++ [L117] 0 return arr; [L93] 0 queue = create_fresh_uint_array(n) [L96] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) [L50] 1 unsigned int x = 0; [L51] 1 unsigned int i=0; [L39] COND TRUE 1 !cond [L56] 1 queue[end] [L39] COND TRUE 1 !cond [L57] 1 end++ [L60] 1 return 0; [L97] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) [L98] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) [L99] 0 \read(t1) [L99] FCALL, JOIN 1 pthread_join(t1, 0) [L100] 0 \read(t2) [L64] 2 unsigned int x = 0; [L65] 2 unsigned int i=0; [L39] COND FALSE 2 !(!cond) [L70] 2 queue[end] [L39] COND FALSE 2 !(!cond) [L71] 2 end++ [L74] 2 return 0; [L39] COND TRUE 3 !cond [L39] COND TRUE 3 !cond [L80] EXPR 3 queue[start] [L80] EXPR 3 queue[start+1] [L80] 3 ok = (queue[start] == queue[start+1]) [L82] 3 return 0; [L100] FCALL, JOIN 2 pthread_join(t2, 0) [L101] 0 \read(t3) [L101] FCALL, JOIN 3 pthread_join(t3, 0) [L39] COND TRUE 0 !cond [L104] 0 reach_error() - UnprovableResult [Line: 56]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 56]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 70]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 70]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 80]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 80]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 80]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 80]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 115]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 115]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 96]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 96]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 97]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 97]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 98]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 98]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 99]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 99]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 100]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 100]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 101]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 101]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 85]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 98]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 97]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 96]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 217 locations, 35 error locations. Started 1 CEGAR loops. OverallTime: 863922.8ms, OverallIterations: 17, TraceHistogramMax: 14, EmptinessCheckTime: 28.1ms, AutomataDifference: 74946.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 26138.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 513 SDtfs, 6989 SDslu, 2915 SDs, 0 SdLazy, 3335 SolverSat, 88 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17711.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 203 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 64877.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=874occurred in iteration=0, InterpolantAutomatonStates: 108, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 476.8ms AutomataMinimizationTime, 16 MinimizatonAttempts, 7342 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 152.7ms SsaConstructionTime, 808.9ms SatisfiabilityAnalysisTime, 23441.6ms InterpolantComputationTime, 103 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 174 ConstructedInterpolants, 26 QuantifiedInterpolants, 3248 SizeOfPredicates, 112 NumberOfNonLiveVariables, 1045 ConjunctsInSsa, 138 ConjunctsInUnsatCore, 32 InterpolantComputations, 24 PerfectInterpolantSequences, 28/288 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: unable to determine feasibility of some traces Completed graceful shutdown