/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/test-semi1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 16:43:48,802 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 16:43:48,807 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 16:43:48,865 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-07 16:43:48,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-07 16:43:48,967 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-07 16:43:48,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-07 16:43:48,974 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-07 16:43:49,020 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 16:43:49,020 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 16:43:49,021 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 16:43:49,021 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 16:43:49,024 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 16:43:49,025 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 16:43:49,025 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 16:43:49,025 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 16:43:49,026 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 16:43:49,026 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 16:43:49,027 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 16:43:49,027 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 16:43:49,027 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 16:43:49,028 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-07 16:43:49,028 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-07 16:43:49,028 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-07 16:43:49,028 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 16:43:49,029 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-07 16:43:49,029 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-07 16:43:49,029 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-07 16:43:49,029 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 16:43:49,029 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 16:43:49,030 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 16:43:49,030 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 16:43:49,030 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 16:43:49,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 16:43:49,030 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 16:43:49,031 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 16:43:49,031 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-07 16:43:49,031 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-07 16:43:49,031 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 16:43:49,031 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-07 16:43:49,032 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 16:43:49,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 16:43:49,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 16:43:49,486 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 16:43:49,487 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 16:43:49,488 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 16:43:49,489 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-semi1.wvr.c [2021-10-07 16:43:49,576 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/603bcb346/7d62d5dc11b0434480091f98f77e4f21/FLAGd6ca2cbe3 [2021-10-07 16:43:50,251 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 16:43:50,253 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/test-semi1.wvr.c [2021-10-07 16:43:50,262 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/603bcb346/7d62d5dc11b0434480091f98f77e4f21/FLAGd6ca2cbe3 [2021-10-07 16:43:50,593 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/603bcb346/7d62d5dc11b0434480091f98f77e4f21 [2021-10-07 16:43:50,596 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 16:43:50,605 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-07 16:43:50,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 16:43:50,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 16:43:50,611 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 16:43:50,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 04:43:50" (1/1) ... [2021-10-07 16:43:50,613 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19984b6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:43:50, skipping insertion in model container [2021-10-07 16:43:50,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 04:43:50" (1/1) ... [2021-10-07 16:43:50,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 16:43:50,639 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 16:43:50,806 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/test-semi1.wvr.c[1974,1987] [2021-10-07 16:43:50,810 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 16:43:50,824 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 16:43:50,846 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/test-semi1.wvr.c[1974,1987] [2021-10-07 16:43:50,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 16:43:50,865 INFO L208 MainTranslator]: Completed translation [2021-10-07 16:43:50,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:43:50 WrapperNode [2021-10-07 16:43:50,866 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 16:43:50,867 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 16:43:50,868 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 16:43:50,868 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 16:43:50,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:43:50" (1/1) ... [2021-10-07 16:43:50,888 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:43:50" (1/1) ... [2021-10-07 16:43:50,912 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 16:43:50,913 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 16:43:50,913 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 16:43:50,913 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 16:43:50,923 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:43:50" (1/1) ... [2021-10-07 16:43:50,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:43:50" (1/1) ... [2021-10-07 16:43:50,927 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:43:50" (1/1) ... [2021-10-07 16:43:50,927 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:43:50" (1/1) ... [2021-10-07 16:43:50,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:43:50" (1/1) ... [2021-10-07 16:43:50,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:43:50" (1/1) ... [2021-10-07 16:43:50,940 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:43:50" (1/1) ... [2021-10-07 16:43:50,943 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 16:43:50,944 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 16:43:50,944 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 16:43:50,944 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 16:43:50,945 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:43:50" (1/1) ... [2021-10-07 16:43:50,954 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 16:43:50,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 16:43:50,992 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) [2021-10-07 16:43:51,017 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 [2021-10-07 16:43:51,071 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 16:43:51,072 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 16:43:51,072 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 16:43:51,072 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 16:43:51,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-07 16:43:51,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 16:43:51,072 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-07 16:43:51,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-07 16:43:51,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-07 16:43:51,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 16:43:51,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 16:43:51,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 16:43:51,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-07 16:43:51,076 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-07 16:43:51,628 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 16:43:51,628 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-07 16:43:51,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 04:43:51 BoogieIcfgContainer [2021-10-07 16:43:51,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 16:43:51,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 16:43:51,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 16:43:51,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 16:43:51,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 04:43:50" (1/3) ... [2021-10-07 16:43:51,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c588d2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 04:43:51, skipping insertion in model container [2021-10-07 16:43:51,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:43:50" (2/3) ... [2021-10-07 16:43:51,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c588d2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 04:43:51, skipping insertion in model container [2021-10-07 16:43:51,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 04:43:51" (3/3) ... [2021-10-07 16:43:51,640 INFO L111 eAbstractionObserver]: Analyzing ICFG test-semi1.wvr.c [2021-10-07 16:43:51,646 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 16:43:51,647 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-07 16:43:51,647 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 16:43:51,678 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:43:51,678 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:43:51,679 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:43:51,679 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:43:51,679 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:43:51,679 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:43:51,680 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:43:51,680 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:43:51,680 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:43:51,680 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:43:51,681 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:43:51,681 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:43:51,681 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:43:51,681 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:43:51,682 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:43:51,682 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:43:51,685 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:43:51,686 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:43:51,686 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:43:51,689 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:43:51,689 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:43:51,689 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:43:51,689 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:43:51,689 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:43:51,696 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-07 16:43:51,749 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 16:43:51,757 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 [2021-10-07 16:43:51,758 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-10-07 16:43:51,774 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 16:43:51,786 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 82 transitions, 180 flow [2021-10-07 16:43:51,790 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 82 transitions, 180 flow [2021-10-07 16:43:51,792 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 82 transitions, 180 flow [2021-10-07 16:43:51,837 INFO L129 PetriNetUnfolder]: 3/80 cut-off events. [2021-10-07 16:43:51,838 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-07 16:43:51,841 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 80 events. 3/80 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2021-10-07 16:43:51,843 INFO L116 LiptonReduction]: Number of co-enabled transitions 156 [2021-10-07 16:44:00,105 INFO L131 LiptonReduction]: Checked pairs total: 292 [2021-10-07 16:44:00,105 INFO L133 LiptonReduction]: Total number of compositions: 86 [2021-10-07 16:44:00,115 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 23 transitions, 62 flow [2021-10-07 16:44:00,125 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) [2021-10-07 16:44:00,127 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) [2021-10-07 16:44:00,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-07 16:44:00,133 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:44:00,133 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-07 16:44:00,134 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:44:00,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:44:00,140 INFO L82 PathProgramCache]: Analyzing trace with hash 324, now seen corresponding path program 1 times [2021-10-07 16:44:00,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:44:00,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1805709027] [2021-10-07 16:44:00,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:44:00,154 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:44:00,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:44:00,164 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) [2021-10-07 16:44:00,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-07 16:44:00,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:44:00,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-07 16:44:00,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:44:00,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:44:00,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:44:00,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:44:00,228 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:44:00,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1805709027] [2021-10-07 16:44:00,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1805709027] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:44:00,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:44:00,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-07 16:44:00,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012749091] [2021-10-07 16:44:00,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-07 16:44:00,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:44:00,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-07 16:44:00,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-07 16:44:00,254 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) [2021-10-07 16:44:00,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:44:00,268 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2021-10-07 16:44:00,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-07 16:44:00,270 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 [2021-10-07 16:44:00,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:44:00,278 INFO L225 Difference]: With dead ends: 36 [2021-10-07 16:44:00,279 INFO L226 Difference]: Without dead ends: 36 [2021-10-07 16:44:00,280 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 [2021-10-07 16:44:00,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-07 16:44:00,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-10-07 16:44:00,313 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) [2021-10-07 16:44:00,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2021-10-07 16:44:00,316 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 1 [2021-10-07 16:44:00,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:44:00,316 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2021-10-07 16:44:00,317 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) [2021-10-07 16:44:00,317 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2021-10-07 16:44:00,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 16:44:00,317 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:44:00,318 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 16:44:00,329 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-07 16:44:00,532 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 [2021-10-07 16:44:00,532 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:44:00,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:44:00,534 INFO L82 PathProgramCache]: Analyzing trace with hash 319908, now seen corresponding path program 1 times [2021-10-07 16:44:00,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:44:00,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [462509827] [2021-10-07 16:44:00,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:44:00,536 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:44:00,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:44:00,538 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) [2021-10-07 16:44:00,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-07 16:44:00,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:44:00,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 16:44:00,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:44:00,727 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-07 16:44:00,728 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 1 case distinctions, treesize of input 9 treesize of output 14 [2021-10-07 16:44:00,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:44:00,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:44:00,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:44:00,790 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:44:00,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [462509827] [2021-10-07 16:44:00,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [462509827] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:44:00,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:44:00,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 16:44:00,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443835111] [2021-10-07 16:44:00,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 16:44:00,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:44:00,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 16:44:00,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:44:00,796 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) [2021-10-07 16:44:00,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:44:00,827 INFO L93 Difference]: Finished difference Result 32 states and 50 transitions. [2021-10-07 16:44:00,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:44:00,828 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 [2021-10-07 16:44:00,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:44:00,829 INFO L225 Difference]: With dead ends: 32 [2021-10-07 16:44:00,829 INFO L226 Difference]: Without dead ends: 32 [2021-10-07 16:44:00,830 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 [2021-10-07 16:44:00,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-07 16:44:00,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-10-07 16:44:00,834 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) [2021-10-07 16:44:00,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 50 transitions. [2021-10-07 16:44:00,836 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 50 transitions. Word has length 3 [2021-10-07 16:44:00,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:44:00,836 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 50 transitions. [2021-10-07 16:44:00,837 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) [2021-10-07 16:44:00,837 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 50 transitions. [2021-10-07 16:44:00,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 16:44:00,837 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:44:00,837 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 16:44:00,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-07 16:44:01,049 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 [2021-10-07 16:44:01,050 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:44:01,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:44:01,052 INFO L82 PathProgramCache]: Analyzing trace with hash 319909, now seen corresponding path program 1 times [2021-10-07 16:44:01,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:44:01,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [21060910] [2021-10-07 16:44:01,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:44:01,053 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:44:01,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:44:01,054 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) [2021-10-07 16:44:01,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-07 16:44:01,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:44:01,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 16:44:01,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:44:01,195 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-07 16:44:01,195 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 [2021-10-07 16:44:01,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:44:01,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:44:01,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:44:01,322 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:44:01,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [21060910] [2021-10-07 16:44:01,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [21060910] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:44:01,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:44:01,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:44:01,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240408686] [2021-10-07 16:44:01,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:44:01,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:44:01,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:44:01,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:44:01,325 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) [2021-10-07 16:44:01,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:44:01,348 INFO L93 Difference]: Finished difference Result 28 states and 44 transitions. [2021-10-07 16:44:01,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:44:01,349 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 [2021-10-07 16:44:01,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:44:01,350 INFO L225 Difference]: With dead ends: 28 [2021-10-07 16:44:01,350 INFO L226 Difference]: Without dead ends: 28 [2021-10-07 16:44:01,351 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:44:01,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-07 16:44:01,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-07 16:44:01,355 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) [2021-10-07 16:44:01,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 44 transitions. [2021-10-07 16:44:01,356 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 44 transitions. Word has length 3 [2021-10-07 16:44:01,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:44:01,357 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 44 transitions. [2021-10-07 16:44:01,357 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) [2021-10-07 16:44:01,357 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 44 transitions. [2021-10-07 16:44:01,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 16:44:01,358 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:44:01,358 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 16:44:01,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-07 16:44:01,569 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 [2021-10-07 16:44:01,570 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:44:01,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:44:01,572 INFO L82 PathProgramCache]: Analyzing trace with hash 307440183, now seen corresponding path program 1 times [2021-10-07 16:44:01,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:44:01,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [906133834] [2021-10-07 16:44:01,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:44:01,574 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:44:01,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:44:01,575 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) [2021-10-07 16:44:01,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-07 16:44:01,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:44:01,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 16:44:01,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:44:01,643 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-07 16:44:01,644 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 1 case distinctions, treesize of input 9 treesize of output 14 [2021-10-07 16:44:01,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:44:01,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:44:01,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:44:01,707 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:44:01,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [906133834] [2021-10-07 16:44:01,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [906133834] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:44:01,708 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:44:01,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 16:44:01,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835011833] [2021-10-07 16:44:01,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 16:44:01,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:44:01,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 16:44:01,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:44:01,711 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) [2021-10-07 16:44:01,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:44:01,730 INFO L93 Difference]: Finished difference Result 24 states and 36 transitions. [2021-10-07 16:44:01,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:44:01,731 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 [2021-10-07 16:44:01,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:44:01,732 INFO L225 Difference]: With dead ends: 24 [2021-10-07 16:44:01,732 INFO L226 Difference]: Without dead ends: 24 [2021-10-07 16:44:01,732 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:44:01,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-07 16:44:01,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-07 16:44:01,736 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) [2021-10-07 16:44:01,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 36 transitions. [2021-10-07 16:44:01,737 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 36 transitions. Word has length 5 [2021-10-07 16:44:01,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:44:01,738 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 36 transitions. [2021-10-07 16:44:01,738 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) [2021-10-07 16:44:01,738 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 36 transitions. [2021-10-07 16:44:01,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 16:44:01,739 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:44:01,739 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 16:44:01,753 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-07 16:44:01,950 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 [2021-10-07 16:44:01,951 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:44:01,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:44:01,952 INFO L82 PathProgramCache]: Analyzing trace with hash 307440185, now seen corresponding path program 1 times [2021-10-07 16:44:01,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:44:01,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1837351512] [2021-10-07 16:44:01,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:44:01,955 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:44:01,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:44:01,956 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) [2021-10-07 16:44:01,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-07 16:44:02,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:44:02,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 16:44:02,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:44:02,106 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-07 16:44:02,106 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 [2021-10-07 16:44:02,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:44:02,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:44:02,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:44:02,264 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:44:02,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1837351512] [2021-10-07 16:44:02,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1837351512] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:44:02,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:44:02,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:44:02,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294700107] [2021-10-07 16:44:02,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:44:02,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:44:02,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:44:02,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:44:02,268 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) [2021-10-07 16:44:02,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:44:02,283 INFO L93 Difference]: Finished difference Result 20 states and 28 transitions. [2021-10-07 16:44:02,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:44:02,284 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 [2021-10-07 16:44:02,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:44:02,285 INFO L225 Difference]: With dead ends: 20 [2021-10-07 16:44:02,285 INFO L226 Difference]: Without dead ends: 20 [2021-10-07 16:44:02,286 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:44:02,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-07 16:44:02,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-07 16:44:02,288 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) [2021-10-07 16:44:02,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions. [2021-10-07 16:44:02,289 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 5 [2021-10-07 16:44:02,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:44:02,290 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 28 transitions. [2021-10-07 16:44:02,290 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) [2021-10-07 16:44:02,290 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions. [2021-10-07 16:44:02,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 16:44:02,291 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:44:02,291 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:44:02,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-07 16:44:02,491 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 [2021-10-07 16:44:02,492 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)] === [2021-10-07 16:44:02,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:44:02,493 INFO L82 PathProgramCache]: Analyzing trace with hash -343431438, now seen corresponding path program 1 times [2021-10-07 16:44:02,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:44:02,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [195453238] [2021-10-07 16:44:02,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:44:02,494 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:44:02,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:44:02,497 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) [2021-10-07 16:44:02,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-07 16:44:02,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:44:02,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 16:44:02,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:44:02,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:44:02,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:44:02,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:44:02,872 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:44:02,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [195453238] [2021-10-07 16:44:02,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [195453238] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:44:02,873 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:44:02,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-07 16:44:02,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913103814] [2021-10-07 16:44:02,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 16:44:02,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:44:02,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 16:44:02,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:44:02,875 INFO L87 Difference]: Start difference. First operand 20 states and 28 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:02,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:44:02,944 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2021-10-07 16:44:02,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 16:44:02,944 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-07 16:44:02,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:44:02,945 INFO L225 Difference]: With dead ends: 25 [2021-10-07 16:44:02,945 INFO L226 Difference]: Without dead ends: 14 [2021-10-07 16:44:02,946 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 59.8ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:44:02,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-07 16:44:02,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-07 16:44:02,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:02,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-10-07 16:44:02,963 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2021-10-07 16:44:02,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:44:02,964 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-10-07 16:44:02,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:02,964 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-10-07 16:44:02,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 16:44:02,964 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:44:02,964 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:44:02,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-07 16:44:03,165 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 [2021-10-07 16:44:03,166 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:44:03,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:44:03,168 INFO L82 PathProgramCache]: Analyzing trace with hash -361216272, now seen corresponding path program 2 times [2021-10-07 16:44:03,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:44:03,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1627383310] [2021-10-07 16:44:03,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:44:03,169 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:44:03,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:44:03,171 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) [2021-10-07 16:44:03,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-07 16:44:03,237 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 16:44:03,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:44:03,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 16:44:03,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:44:03,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:44:03,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:44:03,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:44:03,347 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:44:03,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1627383310] [2021-10-07 16:44:03,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1627383310] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:44:03,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:44:03,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-07 16:44:03,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032108217] [2021-10-07 16:44:03,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:44:03,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:44:03,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:44:03,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:44:03,350 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:03,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:44:03,368 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2021-10-07 16:44:03,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:44:03,369 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2021-10-07 16:44:03,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:44:03,369 INFO L225 Difference]: With dead ends: 13 [2021-10-07 16:44:03,369 INFO L226 Difference]: Without dead ends: 0 [2021-10-07 16:44:03,370 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.8ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:44:03,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-07 16:44:03,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-07 16:44:03,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:03,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-07 16:44:03,371 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-10-07 16:44:03,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:44:03,371 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-07 16:44:03,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:03,371 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-07 16:44:03,372 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-07 16:44:03,374 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-07 16:44:03,375 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-07 16:44:03,375 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-07 16:44:03,375 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-07 16:44:03,375 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-07 16:44:03,376 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-07 16:44:03,376 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-07 16:44:03,376 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-07 16:44:03,376 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 16:44:03,376 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 16:44:03,377 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 16:44:03,377 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 16:44:03,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-07 16:44:03,593 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 [2021-10-07 16:44:03,602 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 16:44:03,602 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 16:44:03,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 04:44:03 BasicIcfg [2021-10-07 16:44:03,605 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 16:44:03,608 INFO L168 Benchmark]: Toolchain (without parser) took 13008.28 ms. Allocated memory was 151.0 MB in the beginning and 196.1 MB in the end (delta: 45.1 MB). Free memory was 124.7 MB in the beginning and 159.7 MB in the end (delta: -35.0 MB). Peak memory consumption was 11.2 MB. Max. memory is 8.0 GB. [2021-10-07 16:44:03,608 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 123.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 16:44:03,609 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.37 ms. Allocated memory is still 151.0 MB. Free memory was 124.3 MB in the beginning and 113.8 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-07 16:44:03,609 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.76 ms. Allocated memory is still 151.0 MB. Free memory was 113.8 MB in the beginning and 112.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 16:44:03,610 INFO L168 Benchmark]: Boogie Preprocessor took 29.87 ms. Allocated memory is still 151.0 MB. Free memory was 112.3 MB in the beginning and 111.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-07 16:44:03,610 INFO L168 Benchmark]: RCFGBuilder took 687.68 ms. Allocated memory is still 151.0 MB. Free memory was 110.9 MB in the beginning and 131.2 MB in the end (delta: -20.4 MB). Peak memory consumption was 17.2 MB. Max. memory is 8.0 GB. [2021-10-07 16:44:03,611 INFO L168 Benchmark]: TraceAbstraction took 11972.12 ms. Allocated memory was 151.0 MB in the beginning and 196.1 MB in the end (delta: 45.1 MB). Free memory was 130.7 MB in the beginning and 159.7 MB in the end (delta: -29.0 MB). Peak memory consumption was 16.1 MB. Max. memory is 8.0 GB. [2021-10-07 16:44:03,614 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 123.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 259.37 ms. Allocated memory is still 151.0 MB. Free memory was 124.3 MB in the beginning and 113.8 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 44.76 ms. Allocated memory is still 151.0 MB. Free memory was 113.8 MB in the beginning and 112.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.87 ms. Allocated memory is still 151.0 MB. Free memory was 112.3 MB in the beginning and 111.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 687.68 ms. Allocated memory is still 151.0 MB. Free memory was 110.9 MB in the beginning and 131.2 MB in the end (delta: -20.4 MB). Peak memory consumption was 17.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 11972.12 ms. Allocated memory was 151.0 MB in the beginning and 196.1 MB in the end (delta: 45.1 MB). Free memory was 130.7 MB in the beginning and 159.7 MB in the end (delta: -29.0 MB). Peak memory consumption was 16.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8315.5ms, 86 PlacesBefore, 30 PlacesAfterwards, 82 TransitionsBefore, 23 TransitionsAfterwards, 156 CoEnabledTransitionPairs, 7 FixpointIterations, 60 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 0 ConcurrentYvCompositions, 3 ChoiceCompositions, 86 TotalNumberOfCompositions, 292 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 227, positive: 213, positive conditional: 0, positive unconditional: 213, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 111, positive: 107, positive conditional: 0, positive unconditional: 107, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 111, positive: 107, positive conditional: 0, positive unconditional: 107, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 31, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 227, positive: 106, positive conditional: 0, positive unconditional: 106, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 111, unknown conditional: 0, unknown unconditional: 111] , Statistics on independence cache: Total cache size (in pairs): 13, Positive cache size: 11, Positive conditional cache size: 0, Positive unconditional cache size: 11, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - 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 - PositiveResult [Line: 66]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 66]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 67]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 67]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 68]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 68]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 69]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 69]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 72]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 57]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 90 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 11853.7ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 10.7ms, AutomataDifference: 239.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8367.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 75 SDtfs, 68 SDslu, 26 SDs, 0 SdLazy, 34 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 135.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 160.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 56.3ms AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 63.0ms SsaConstructionTime, 152.8ms SatisfiabilityAnalysisTime, 1181.0ms InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 467 SizeOfPredicates, 16 NumberOfNonLiveVariables, 283 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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 - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-07 16:44:03,662 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...