/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/chl/simpl-str-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-06 21:10:29,117 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-06 21:10:29,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-06 21:10:29,183 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-06 21:10:29,292 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-06 21:10:29,345 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-06 21:10:29,345 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-06 21:10:29,346 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-06 21:10:29,346 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-06 21:10:29,351 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-06 21:10:29,351 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-06 21:10:29,351 INFO L138 SettingsManager]: * Use SBE=true [2021-10-06 21:10:29,352 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-06 21:10:29,352 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-06 21:10:29,352 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-06 21:10:29,353 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-06 21:10:29,354 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-06 21:10:29,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-06 21:10:29,354 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-06 21:10:29,354 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-06 21:10:29,354 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-06 21:10:29,355 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-06 21:10:29,355 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-06 21:10:29,355 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-06 21:10:29,355 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-06 21:10:29,355 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-06 21:10:29,356 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-06 21:10:29,356 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-06 21:10:29,356 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-06 21:10:29,356 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-06 21:10:29,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:10:29,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-06 21:10:29,357 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-06 21:10:29,357 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-06 21:10:29,358 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-06 21:10:29,358 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-06 21:10:29,358 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-06 21:10:29,359 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-06 21:10:29,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-06 21:10:29,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-06 21:10:29,798 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-06 21:10:29,799 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-06 21:10:29,800 INFO L275 PluginConnector]: CDTParser initialized [2021-10-06 21:10:29,801 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl/simpl-str-symm.wvr.c [2021-10-06 21:10:29,891 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f14d53b57/84109fc22d994ad5bc2fbd1ab4ebca4d/FLAG2b870ae82 [2021-10-06 21:10:30,611 INFO L306 CDTParser]: Found 1 translation units. [2021-10-06 21:10:30,612 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl/simpl-str-symm.wvr.c [2021-10-06 21:10:30,620 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f14d53b57/84109fc22d994ad5bc2fbd1ab4ebca4d/FLAG2b870ae82 [2021-10-06 21:10:30,971 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f14d53b57/84109fc22d994ad5bc2fbd1ab4ebca4d [2021-10-06 21:10:30,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-06 21:10:30,981 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-06 21:10:30,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-06 21:10:30,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-06 21:10:30,988 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-06 21:10:30,989 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:10:30" (1/1) ... [2021-10-06 21:10:30,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79d3fdb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:10:30, skipping insertion in model container [2021-10-06 21:10:30,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:10:30" (1/1) ... [2021-10-06 21:10:30,999 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-06 21:10:31,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 21:10:31,208 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/chl/simpl-str-symm.wvr.c[2216,2229] [2021-10-06 21:10:31,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:10:31,228 INFO L203 MainTranslator]: Completed pre-run [2021-10-06 21:10:31,253 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/chl/simpl-str-symm.wvr.c[2216,2229] [2021-10-06 21:10:31,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:10:31,275 INFO L208 MainTranslator]: Completed translation [2021-10-06 21:10:31,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:10:31 WrapperNode [2021-10-06 21:10:31,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-06 21:10:31,278 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-06 21:10:31,278 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-06 21:10:31,278 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-06 21:10:31,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:10:31" (1/1) ... [2021-10-06 21:10:31,301 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:10:31" (1/1) ... [2021-10-06 21:10:31,326 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-06 21:10:31,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-06 21:10:31,327 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-06 21:10:31,328 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-06 21:10:31,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:10:31" (1/1) ... [2021-10-06 21:10:31,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:10:31" (1/1) ... [2021-10-06 21:10:31,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:10:31" (1/1) ... [2021-10-06 21:10:31,346 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:10:31" (1/1) ... [2021-10-06 21:10:31,355 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:10:31" (1/1) ... [2021-10-06 21:10:31,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:10:31" (1/1) ... [2021-10-06 21:10:31,359 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:10:31" (1/1) ... [2021-10-06 21:10:31,362 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-06 21:10:31,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-06 21:10:31,364 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-06 21:10:31,364 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-06 21:10:31,365 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:10:31" (1/1) ... [2021-10-06 21:10:31,375 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:10:31,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 21:10:31,410 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) [2021-10-06 21:10:31,433 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 [2021-10-06 21:10:31,506 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-06 21:10:31,506 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-06 21:10:31,506 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-06 21:10:31,507 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-06 21:10:31,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-06 21:10:31,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-06 21:10:31,507 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-06 21:10:31,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-06 21:10:31,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-06 21:10:31,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-06 21:10:31,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-06 21:10:31,513 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-06 21:10:32,038 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-06 21:10:32,038 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-06 21:10:32,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:10:32 BoogieIcfgContainer [2021-10-06 21:10:32,041 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-06 21:10:32,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-06 21:10:32,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-06 21:10:32,047 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-06 21:10:32,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 09:10:30" (1/3) ... [2021-10-06 21:10:32,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@587e6a7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:10:32, skipping insertion in model container [2021-10-06 21:10:32,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:10:31" (2/3) ... [2021-10-06 21:10:32,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@587e6a7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:10:32, skipping insertion in model container [2021-10-06 21:10:32,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:10:32" (3/3) ... [2021-10-06 21:10:32,051 INFO L111 eAbstractionObserver]: Analyzing ICFG simpl-str-symm.wvr.c [2021-10-06 21:10:32,058 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-06 21:10:32,059 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-06 21:10:32,059 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-06 21:10:32,093 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,093 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,093 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,094 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,094 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,094 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,094 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,095 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,095 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,095 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,095 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,096 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,096 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,096 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,096 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,097 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,097 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,097 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,097 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,098 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,098 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,098 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,098 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,099 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,100 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,100 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,100 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,100 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,101 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,101 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,101 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,101 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,102 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,102 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,102 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,102 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,103 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,103 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,103 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,103 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,104 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,104 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,104 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,105 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,105 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,105 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,105 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,105 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,109 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,110 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,110 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,110 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,110 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,115 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,116 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,116 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,116 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,117 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:32,122 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-06 21:10:32,183 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-06 21:10:32,191 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 [2021-10-06 21:10:32,191 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-10-06 21:10:32,210 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-06 21:10:32,223 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 113 places, 115 transitions, 246 flow [2021-10-06 21:10:32,227 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 113 places, 115 transitions, 246 flow [2021-10-06 21:10:32,229 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 113 places, 115 transitions, 246 flow [2021-10-06 21:10:32,304 INFO L129 PetriNetUnfolder]: 9/113 cut-off events. [2021-10-06 21:10:32,304 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-06 21:10:32,311 INFO L84 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 113 events. 9/113 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 139 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2021-10-06 21:10:32,318 INFO L116 LiptonReduction]: Number of co-enabled transitions 1360 [2021-10-06 21:10:40,918 INFO L131 LiptonReduction]: Checked pairs total: 1483 [2021-10-06 21:10:40,918 INFO L133 LiptonReduction]: Total number of compositions: 138 [2021-10-06 21:10:40,928 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 23 transitions, 62 flow [2021-10-06 21:10:40,941 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 39 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 38 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:40,943 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 38 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:40,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-06 21:10:40,953 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:10:40,954 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-06 21:10:40,955 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:10:40,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:10:40,961 INFO L82 PathProgramCache]: Analyzing trace with hash 465, now seen corresponding path program 1 times [2021-10-06 21:10:40,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:10:40,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1645461391] [2021-10-06 21:10:40,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:10:40,977 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:10:40,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:10:40,981 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) [2021-10-06 21:10:40,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-06 21:10:41,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:10:41,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-06 21:10:41,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:10:41,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:10:41,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:10:41,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:10:41,065 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:10:41,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1645461391] [2021-10-06 21:10:41,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1645461391] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:10:41,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:10:41,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-06 21:10:41,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12515013] [2021-10-06 21:10:41,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-06 21:10:41,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:10:41,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-06 21:10:41,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-06 21:10:41,116 INFO L87 Difference]: Start difference. First operand has 39 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 38 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:41,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:10:41,134 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2021-10-06 21:10:41,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-06 21:10:41,135 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2021-10-06 21:10:41,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:10:41,155 INFO L225 Difference]: With dead ends: 36 [2021-10-06 21:10:41,156 INFO L226 Difference]: Without dead ends: 36 [2021-10-06 21:10:41,157 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-06 21:10:41,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-06 21:10:41,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-10-06 21:10:41,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 35 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:41,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2021-10-06 21:10:41,196 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 1 [2021-10-06 21:10:41,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:10:41,197 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2021-10-06 21:10:41,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:41,197 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2021-10-06 21:10:41,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 21:10:41,198 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:10:41,198 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 21:10:41,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-06 21:10:41,409 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 [2021-10-06 21:10:41,410 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:10:41,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:10:41,411 INFO L82 PathProgramCache]: Analyzing trace with hash 458529, now seen corresponding path program 1 times [2021-10-06 21:10:41,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:10:41,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [183628112] [2021-10-06 21:10:41,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:10:41,413 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:10:41,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:10:41,415 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) [2021-10-06 21:10:41,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-06 21:10:41,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:10:41,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:10:41,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:10:41,734 INFO L354 Elim1Store]: treesize reduction 142, result has 23.2 percent of original size [2021-10-06 21:10:41,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 48 [2021-10-06 21:10:42,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:10:42,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:10:42,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:10:42,176 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:10:42,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [183628112] [2021-10-06 21:10:42,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [183628112] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:10:42,179 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:10:42,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:10:42,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446980293] [2021-10-06 21:10:42,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:10:42,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:10:42,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:10:42,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:10:42,184 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:42,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:10:42,226 INFO L93 Difference]: Finished difference Result 32 states and 50 transitions. [2021-10-06 21:10:42,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:10:42,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-06 21:10:42,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:10:42,229 INFO L225 Difference]: With dead ends: 32 [2021-10-06 21:10:42,229 INFO L226 Difference]: Without dead ends: 32 [2021-10-06 21:10:42,230 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:10:42,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-06 21:10:42,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-10-06 21:10:42,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:42,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 50 transitions. [2021-10-06 21:10:42,243 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 50 transitions. Word has length 3 [2021-10-06 21:10:42,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:10:42,244 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 50 transitions. [2021-10-06 21:10:42,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:42,244 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 50 transitions. [2021-10-06 21:10:42,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 21:10:42,245 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:10:42,245 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 21:10:42,260 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-06 21:10:42,458 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 [2021-10-06 21:10:42,458 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:10:42,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:10:42,460 INFO L82 PathProgramCache]: Analyzing trace with hash 458530, now seen corresponding path program 1 times [2021-10-06 21:10:42,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:10:42,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [888638556] [2021-10-06 21:10:42,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:10:42,462 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:10:42,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:10:42,464 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) [2021-10-06 21:10:42,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-06 21:10:42,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:10:42,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:10:42,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:10:42,611 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-06 21:10:42,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 38 [2021-10-06 21:10:42,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:10:42,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:10:42,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:10:42,785 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:10:42,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [888638556] [2021-10-06 21:10:42,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [888638556] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:10:42,786 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:10:42,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:10:42,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87451] [2021-10-06 21:10:42,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:10:42,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:10:42,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:10:42,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:10:42,793 INFO L87 Difference]: Start difference. First operand 32 states and 50 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) [2021-10-06 21:10:42,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:10:42,814 INFO L93 Difference]: Finished difference Result 28 states and 44 transitions. [2021-10-06 21:10:42,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:10:42,815 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-06 21:10:42,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:10:42,816 INFO L225 Difference]: With dead ends: 28 [2021-10-06 21:10:42,816 INFO L226 Difference]: Without dead ends: 28 [2021-10-06 21:10:42,817 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:10:42,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-06 21:10:42,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-06 21:10:42,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 25 states have (on average 1.76) internal successors, (44), 27 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:42,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 44 transitions. [2021-10-06 21:10:42,822 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 44 transitions. Word has length 3 [2021-10-06 21:10:42,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:10:42,822 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 44 transitions. [2021-10-06 21:10:42,823 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) [2021-10-06 21:10:42,823 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 44 transitions. [2021-10-06 21:10:42,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:10:42,824 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:10:42,824 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 21:10:42,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-06 21:10:43,037 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 [2021-10-06 21:10:43,038 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:10:43,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:10:43,039 INFO L82 PathProgramCache]: Analyzing trace with hash 440655061, now seen corresponding path program 1 times [2021-10-06 21:10:43,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:10:43,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [562546740] [2021-10-06 21:10:43,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:10:43,040 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:10:43,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:10:43,042 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) [2021-10-06 21:10:43,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-06 21:10:43,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:10:43,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:10:43,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:10:43,187 INFO L354 Elim1Store]: treesize reduction 142, result has 23.2 percent of original size [2021-10-06 21:10:43,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 48 [2021-10-06 21:10:43,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:10:43,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:10:43,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:10:43,474 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:10:43,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [562546740] [2021-10-06 21:10:43,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [562546740] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:10:43,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:10:43,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:10:43,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145100826] [2021-10-06 21:10:43,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:10:43,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:10:43,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:10:43,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:10:43,477 INFO L87 Difference]: Start difference. First operand 28 states and 44 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:43,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:10:43,493 INFO L93 Difference]: Finished difference Result 24 states and 36 transitions. [2021-10-06 21:10:43,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:10:43,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-06 21:10:43,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:10:43,495 INFO L225 Difference]: With dead ends: 24 [2021-10-06 21:10:43,495 INFO L226 Difference]: Without dead ends: 24 [2021-10-06 21:10:43,496 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:10:43,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-06 21:10:43,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-06 21:10:43,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:43,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 36 transitions. [2021-10-06 21:10:43,499 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 36 transitions. Word has length 5 [2021-10-06 21:10:43,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:10:43,501 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 36 transitions. [2021-10-06 21:10:43,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:43,501 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 36 transitions. [2021-10-06 21:10:43,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:10:43,502 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:10:43,502 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 21:10:43,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-06 21:10:43,704 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 [2021-10-06 21:10:43,705 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:10:43,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:10:43,706 INFO L82 PathProgramCache]: Analyzing trace with hash 440655060, now seen corresponding path program 1 times [2021-10-06 21:10:43,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:10:43,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1610267756] [2021-10-06 21:10:43,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:10:43,708 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:10:43,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:10:43,709 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) [2021-10-06 21:10:43,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-06 21:10:43,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:10:43,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:10:43,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:10:43,858 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-06 21:10:43,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 38 [2021-10-06 21:10:43,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:10:43,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:10:44,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:10:44,010 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:10:44,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1610267756] [2021-10-06 21:10:44,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1610267756] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:10:44,010 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:10:44,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:10:44,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641414437] [2021-10-06 21:10:44,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:10:44,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:10:44,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:10:44,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:10:44,013 INFO L87 Difference]: Start difference. First operand 24 states and 36 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:44,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:10:44,028 INFO L93 Difference]: Finished difference Result 20 states and 28 transitions. [2021-10-06 21:10:44,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:10:44,031 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-06 21:10:44,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:10:44,032 INFO L225 Difference]: With dead ends: 20 [2021-10-06 21:10:44,032 INFO L226 Difference]: Without dead ends: 20 [2021-10-06 21:10:44,032 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:10:44,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-06 21:10:44,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-06 21:10:44,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:44,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions. [2021-10-06 21:10:44,038 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 5 [2021-10-06 21:10:44,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:10:44,038 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 28 transitions. [2021-10-06 21:10:44,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:44,039 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions. [2021-10-06 21:10:44,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-06 21:10:44,039 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:10:44,039 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:10:44,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-06 21:10:44,240 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 [2021-10-06 21:10:44,241 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:10:44,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:10:44,242 INFO L82 PathProgramCache]: Analyzing trace with hash 539464079, now seen corresponding path program 1 times [2021-10-06 21:10:44,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:10:44,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1322464890] [2021-10-06 21:10:44,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:10:44,243 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:10:44,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:10:44,244 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) [2021-10-06 21:10:44,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-06 21:10:44,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-06 21:10:44,318 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-06 21:10:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-06 21:10:44,455 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-06 21:10:44,455 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-06 21:10:44,457 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:10:44,459 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-06 21:10:44,459 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-06 21:10:44,460 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-06 21:10:44,460 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-06 21:10:44,460 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-06 21:10:44,460 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-06 21:10:44,460 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-06 21:10:44,460 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-06 21:10:44,461 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:10:44,461 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-06 21:10:44,461 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-06 21:10:44,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-06 21:10:44,668 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 [2021-10-06 21:10:44,676 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-06 21:10:44,676 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-06 21:10:44,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 09:10:44 BasicIcfg [2021-10-06 21:10:44,708 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-06 21:10:44,710 INFO L168 Benchmark]: Toolchain (without parser) took 13733.88 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 126.1 MB in the beginning and 95.6 MB in the end (delta: 30.5 MB). Peak memory consumption was 62.4 MB. Max. memory is 8.0 GB. [2021-10-06 21:10:44,711 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 121.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-06 21:10:44,711 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.46 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 114.6 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-06 21:10:44,712 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.84 ms. Allocated memory is still 151.0 MB. Free memory was 114.6 MB in the beginning and 113.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-06 21:10:44,713 INFO L168 Benchmark]: Boogie Preprocessor took 35.37 ms. Allocated memory is still 151.0 MB. Free memory was 113.1 MB in the beginning and 111.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-06 21:10:44,713 INFO L168 Benchmark]: RCFGBuilder took 677.39 ms. Allocated memory is still 151.0 MB. Free memory was 111.7 MB in the beginning and 132.1 MB in the end (delta: -20.4 MB). Peak memory consumption was 16.5 MB. Max. memory is 8.0 GB. [2021-10-06 21:10:44,714 INFO L168 Benchmark]: TraceAbstraction took 12665.39 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 131.6 MB in the beginning and 95.6 MB in the end (delta: 35.9 MB). Peak memory consumption was 66.9 MB. Max. memory is 8.0 GB. [2021-10-06 21:10:44,717 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 121.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 293.46 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 114.6 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 48.84 ms. Allocated memory is still 151.0 MB. Free memory was 114.6 MB in the beginning and 113.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.37 ms. Allocated memory is still 151.0 MB. Free memory was 113.1 MB in the beginning and 111.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 677.39 ms. Allocated memory is still 151.0 MB. Free memory was 111.7 MB in the beginning and 132.1 MB in the end (delta: -20.4 MB). Peak memory consumption was 16.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 12665.39 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 131.6 MB in the beginning and 95.6 MB in the end (delta: 35.9 MB). Peak memory consumption was 66.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8691.2ms, 113 PlacesBefore, 30 PlacesAfterwards, 115 TransitionsBefore, 23 TransitionsAfterwards, 1360 CoEnabledTransitionPairs, 7 FixpointIterations, 67 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 12 ConcurrentYvCompositions, 9 ChoiceCompositions, 138 TotalNumberOfCompositions, 1483 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1483, positive: 1483, positive conditional: 0, positive unconditional: 1483, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 974, positive: 974, positive conditional: 0, positive unconditional: 974, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 974, positive: 974, positive conditional: 0, positive unconditional: 974, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1483, positive: 509, positive conditional: 0, positive unconditional: 509, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 974, unknown conditional: 0, unknown unconditional: 974] , Statistics on independence cache: Total cache size (in pairs): 20, Positive cache size: 20, Positive conditional cache size: 0, Positive unconditional cache size: 20, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 66]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 66. Possible FailurePath: [L38] 0 int length_0, to_int_1, length_2, to_int_3, result_4, result_5; [L49] 0 pthread_t t1, t2; [L52] 0 length_0 = __VERIFIER_nondet_int() [L53] 0 to_int_1 = __VERIFIER_nondet_int() [L54] 0 length_2 = __VERIFIER_nondet_int() [L55] 0 to_int_3 = __VERIFIER_nondet_int() [L58] FCALL, FORK 0 pthread_create(&t1, NULL, thread1, NULL) VAL [result_4=0, result_5=0] [L59] FCALL, FORK 0 pthread_create(&t2, NULL, thread2, NULL) VAL [result_4=0, result_5=0] [L60] 0 \read(t1) VAL [result_4=0, result_5=0] [L41] EXPR 1 length_0 == 0 ? (length_2 == 0 ? 0 : 1) : (length_2 == 0 ? -1 : to_int_1 - to_int_3) [L41] EXPR 1 length_2 == 0 ? -1 : to_int_1 - to_int_3 [L41] EXPR 1 length_0 == 0 ? (length_2 == 0 ? 0 : 1) : (length_2 == 0 ? -1 : to_int_1 - to_int_3) [L41] 1 result_4 = length_0 == 0 ? (length_2 == 0 ? 0 : 1) : (length_2 == 0 ? -1 : to_int_1 - to_int_3) [L45] EXPR 2 length_2 == 0 ? (length_0 == 0 ? 0 : 1) : (length_0 == 0 ? -1 : to_int_3 - to_int_1) [L45] EXPR 2 length_0 == 0 ? -1 : to_int_3 - to_int_1 [L45] EXPR 2 length_2 == 0 ? (length_0 == 0 ? 0 : 1) : (length_0 == 0 ? -1 : to_int_3 - to_int_1) [L45] 2 result_5 = length_2 == 0 ? (length_0 == 0 ? 0 : 1) : (length_0 == 0 ? -1 : to_int_3 - to_int_1) [L60] FCALL, JOIN 1 pthread_join(t1, 0) VAL [length_0=2, length_2=2, result_4=-2147483648, result_5=-2147483648, to_int_1=-2147483648, to_int_3=0] [L61] 0 \read(t2) VAL [length_0=2, length_2=2, result_4=-2147483648, result_5=-2147483648, to_int_1=-2147483648, to_int_3=0] [L61] FCALL, JOIN 2 pthread_join(t2, 0) VAL [length_0=2, length_2=2, result_4=-2147483648, result_5=-2147483648, to_int_1=-2147483648, to_int_3=0] [L35] COND FALSE 0 !(!cond) [L35] COND FALSE 0 !(!cond) [L35] COND FALSE 0 !(!cond) [L66] 0 reach_error() VAL [length_0=2, length_2=2, result_4=-2147483648, result_5=-2147483648, to_int_1=-2147483648, to_int_3=0] - UnprovableResult [Line: 58]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 58]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 59]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 59]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 60]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 60]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 61]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 61]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 48]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 58]: 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: 59]: 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 5 procedures, 139 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 12493.8ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 14.8ms, AutomataDifference: 182.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8749.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 51 SDtfs, 57 SDslu, 0 SDs, 0 SdLazy, 17 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 59.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 98.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 49.7ms AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 48.5ms SsaConstructionTime, 122.0ms SatisfiabilityAnalysisTime, 1640.9ms InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 228 SizeOfPredicates, 12 NumberOfNonLiveVariables, 145 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 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 [2021-10-06 21:10:44,773 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 0 Received shutdown request...