/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf -i ../sv-benchmarks/c/weaver/chl/collitem-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-06 20:59:33,560 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-06 20:59:33,563 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-06 20:59:33,624 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-06 20:59:33,700 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-06 20:59:33,701 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-06 20:59:33,702 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-06 20:59:33,709 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-06 20:59:33,761 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-06 20:59:33,762 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-06 20:59:33,762 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-06 20:59:33,763 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-06 20:59:33,766 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-06 20:59:33,767 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-06 20:59:33,767 INFO L138 SettingsManager]: * Use SBE=true [2021-10-06 20:59:33,767 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-06 20:59:33,768 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-06 20:59:33,768 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-06 20:59:33,769 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-06 20:59:33,769 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-06 20:59:33,769 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-06 20:59:33,769 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-06 20:59:33,769 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-06 20:59:33,773 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-06 20:59:33,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-06 20:59:33,773 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-06 20:59:33,773 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-06 20:59:33,773 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-06 20:59:33,774 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-06 20:59:33,774 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-06 20:59:33,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-06 20:59:33,774 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-06 20:59:33,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-06 20:59:33,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 20:59:33,774 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-06 20:59:33,775 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-06 20:59:33,775 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-06 20:59:33,775 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-06 20:59:33,775 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-06 20:59:33,775 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-06 20:59:33,775 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-06 20:59:34,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-06 20:59:34,139 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-06 20:59:34,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-06 20:59:34,144 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-06 20:59:34,144 INFO L275 PluginConnector]: CDTParser initialized [2021-10-06 20:59:34,145 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl/collitem-symm.wvr.c [2021-10-06 20:59:34,219 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d9e3c80a/9a6292bd1bb7475f8d39ee5d2c0d4c19/FLAG6b8acab86 [2021-10-06 20:59:34,774 INFO L306 CDTParser]: Found 1 translation units. [2021-10-06 20:59:34,774 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl/collitem-symm.wvr.c [2021-10-06 20:59:34,790 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d9e3c80a/9a6292bd1bb7475f8d39ee5d2c0d4c19/FLAG6b8acab86 [2021-10-06 20:59:35,153 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d9e3c80a/9a6292bd1bb7475f8d39ee5d2c0d4c19 [2021-10-06 20:59:35,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-06 20:59:35,172 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-06 20:59:35,177 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-06 20:59:35,178 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-06 20:59:35,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-06 20:59:35,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 08:59:35" (1/1) ... [2021-10-06 20:59:35,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7abce228 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:59:35, skipping insertion in model container [2021-10-06 20:59:35,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 08:59:35" (1/1) ... [2021-10-06 20:59:35,193 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-06 20:59:35,221 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 20:59:35,469 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl/collitem-symm.wvr.c[2863,2876] [2021-10-06 20:59:35,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 20:59:35,486 INFO L203 MainTranslator]: Completed pre-run [2021-10-06 20:59:35,512 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl/collitem-symm.wvr.c[2863,2876] [2021-10-06 20:59:35,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 20:59:35,532 INFO L208 MainTranslator]: Completed translation [2021-10-06 20:59:35,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:59:35 WrapperNode [2021-10-06 20:59:35,533 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-06 20:59:35,534 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-06 20:59:35,534 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-06 20:59:35,534 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-06 20:59:35,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:59:35" (1/1) ... [2021-10-06 20:59:35,554 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:59:35" (1/1) ... [2021-10-06 20:59:35,576 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-06 20:59:35,577 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-06 20:59:35,577 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-06 20:59:35,577 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-06 20:59:35,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:59:35" (1/1) ... [2021-10-06 20:59:35,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:59:35" (1/1) ... [2021-10-06 20:59:35,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:59:35" (1/1) ... [2021-10-06 20:59:35,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:59:35" (1/1) ... [2021-10-06 20:59:35,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:59:35" (1/1) ... [2021-10-06 20:59:35,600 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:59:35" (1/1) ... [2021-10-06 20:59:35,604 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:59:35" (1/1) ... [2021-10-06 20:59:35,608 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-06 20:59:35,609 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-06 20:59:35,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-06 20:59:35,609 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-06 20:59:35,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:59:35" (1/1) ... [2021-10-06 20:59:35,618 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 20:59:35,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 20:59:35,647 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-06 20:59:35,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-06 20:59:35,711 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-06 20:59:35,711 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-06 20:59:35,711 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-06 20:59:35,711 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-06 20:59:35,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-06 20:59:35,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-06 20:59:35,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-06 20:59:35,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-06 20:59:35,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-06 20:59:35,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-06 20:59:35,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-06 20:59:35,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-06 20:59:35,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-06 20:59:35,715 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-06 20:59:36,514 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-06 20:59:36,514 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-06 20:59:36,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 08:59:36 BoogieIcfgContainer [2021-10-06 20:59:36,517 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-06 20:59:36,519 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-06 20:59:36,519 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-06 20:59:36,524 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-06 20:59:36,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 08:59:35" (1/3) ... [2021-10-06 20:59:36,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50eaa4e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 08:59:36, skipping insertion in model container [2021-10-06 20:59:36,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:59:35" (2/3) ... [2021-10-06 20:59:36,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50eaa4e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 08:59:36, skipping insertion in model container [2021-10-06 20:59:36,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 08:59:36" (3/3) ... [2021-10-06 20:59:36,538 INFO L111 eAbstractionObserver]: Analyzing ICFG collitem-symm.wvr.c [2021-10-06 20:59:36,548 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-06 20:59:36,548 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-06 20:59:36,548 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-06 20:59:36,618 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:36,618 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:36,618 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:36,621 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:36,621 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:36,621 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:36,624 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:36,624 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:36,625 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:36,625 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:36,625 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:36,626 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:36,630 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:36,630 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:36,630 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:36,631 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:36,631 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:36,633 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:36,633 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:36,634 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:36,634 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:36,634 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:59:36,639 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-06 20:59:36,687 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-06 20:59:36,695 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-06 20:59:36,695 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-10-06 20:59:36,712 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-06 20:59:36,724 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 101 transitions, 218 flow [2021-10-06 20:59:36,727 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 101 transitions, 218 flow [2021-10-06 20:59:36,729 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 105 places, 101 transitions, 218 flow [2021-10-06 20:59:36,778 INFO L129 PetriNetUnfolder]: 3/99 cut-off events. [2021-10-06 20:59:36,778 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-06 20:59:36,781 INFO L84 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 99 events. 3/99 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 38 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2021-10-06 20:59:36,783 INFO L116 LiptonReduction]: Number of co-enabled transitions 100 [2021-10-06 20:59:45,736 INFO L131 LiptonReduction]: Checked pairs total: 225 [2021-10-06 20:59:45,736 INFO L133 LiptonReduction]: Total number of compositions: 111 [2021-10-06 20:59:45,745 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 23 transitions, 62 flow [2021-10-06 20:59:45,757 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 39 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 38 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:45,759 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 38 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:45,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-06 20:59:45,764 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:45,765 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-06 20:59:45,765 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:59:45,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:45,771 INFO L82 PathProgramCache]: Analyzing trace with hash 457, now seen corresponding path program 1 times [2021-10-06 20:59:45,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:45,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1313992194] [2021-10-06 20:59:45,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:59:45,784 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:45,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:45,786 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:59:45,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-06 20:59:45,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:59:45,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-06 20:59:45,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:45,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:45,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:45,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:45,855 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:45,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1313992194] [2021-10-06 20:59:45,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1313992194] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:59:45,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:59:45,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-06 20:59:45,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155179922] [2021-10-06 20:59:45,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-06 20:59:45,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:45,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-06 20:59:45,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-06 20:59:45,880 INFO L87 Difference]: Start difference. First operand has 39 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 38 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:45,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:45,894 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2021-10-06 20:59:45,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-06 20:59:45,895 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2021-10-06 20:59:45,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:45,904 INFO L225 Difference]: With dead ends: 36 [2021-10-06 20:59:45,904 INFO L226 Difference]: Without dead ends: 36 [2021-10-06 20:59:45,905 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-06 20:59:45,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-06 20:59:45,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-10-06 20:59:45,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 35 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:45,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2021-10-06 20:59:45,940 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 1 [2021-10-06 20:59:45,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:45,940 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2021-10-06 20:59:45,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:45,941 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2021-10-06 20:59:45,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 20:59:45,941 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:45,941 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 20:59:45,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-06 20:59:46,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:59:46,155 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:59:46,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:46,156 INFO L82 PathProgramCache]: Analyzing trace with hash 451252, now seen corresponding path program 1 times [2021-10-06 20:59:46,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:46,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2132812207] [2021-10-06 20:59:46,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:59:46,157 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:46,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:46,159 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:59:46,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-06 20:59:46,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:59:46,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 20:59:46,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:46,411 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-06 20:59:46,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 38 [2021-10-06 20:59:46,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:46,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:46,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:46,584 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:46,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2132812207] [2021-10-06 20:59:46,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2132812207] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:59:46,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:59:46,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 20:59:46,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269760853] [2021-10-06 20:59:46,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 20:59:46,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:46,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 20:59:46,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:59:46,589 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:46,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:46,618 INFO L93 Difference]: Finished difference Result 32 states and 50 transitions. [2021-10-06 20:59:46,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 20:59:46,619 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-06 20:59:46,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:46,620 INFO L225 Difference]: With dead ends: 32 [2021-10-06 20:59:46,620 INFO L226 Difference]: Without dead ends: 32 [2021-10-06 20:59:46,621 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:59:46,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-06 20:59:46,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-10-06 20:59:46,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:46,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 50 transitions. [2021-10-06 20:59:46,627 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 50 transitions. Word has length 3 [2021-10-06 20:59:46,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:46,627 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 50 transitions. [2021-10-06 20:59:46,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:46,628 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 50 transitions. [2021-10-06 20:59:46,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 20:59:46,628 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:46,628 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 20:59:46,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-06 20:59:46,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:59:46,840 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:59:46,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:46,842 INFO L82 PathProgramCache]: Analyzing trace with hash 451254, now seen corresponding path program 1 times [2021-10-06 20:59:46,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:46,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2083994548] [2021-10-06 20:59:46,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:59:46,844 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:46,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:46,845 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:59:46,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-06 20:59:46,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:59:46,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 20:59:46,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:47,001 INFO L354 Elim1Store]: treesize reduction 142, result has 23.2 percent of original size [2021-10-06 20:59:47,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 48 [2021-10-06 20:59:47,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:47,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:47,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:47,364 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:47,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2083994548] [2021-10-06 20:59:47,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2083994548] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:59:47,365 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:59:47,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 20:59:47,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789824693] [2021-10-06 20:59:47,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 20:59:47,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:47,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 20:59:47,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 20:59:47,367 INFO L87 Difference]: Start difference. First operand 32 states and 50 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:47,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:47,383 INFO L93 Difference]: Finished difference Result 28 states and 44 transitions. [2021-10-06 20:59:47,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 20:59:47,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-06 20:59:47,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:47,384 INFO L225 Difference]: With dead ends: 28 [2021-10-06 20:59:47,385 INFO L226 Difference]: Without dead ends: 28 [2021-10-06 20:59:47,385 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 20:59:47,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-06 20:59:47,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-06 20:59:47,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 25 states have (on average 1.76) internal successors, (44), 27 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:47,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 44 transitions. [2021-10-06 20:59:47,390 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 44 transitions. Word has length 3 [2021-10-06 20:59:47,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:47,390 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 44 transitions. [2021-10-06 20:59:47,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:47,391 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 44 transitions. [2021-10-06 20:59:47,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 20:59:47,391 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:47,391 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 20:59:47,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-06 20:59:47,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:59:47,604 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:59:47,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:47,605 INFO L82 PathProgramCache]: Analyzing trace with hash 433664218, now seen corresponding path program 1 times [2021-10-06 20:59:47,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:47,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [602809082] [2021-10-06 20:59:47,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:59:47,607 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:47,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:47,608 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:59:47,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-06 20:59:47,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:59:47,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 20:59:47,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:47,768 INFO L354 Elim1Store]: treesize reduction 142, result has 23.2 percent of original size [2021-10-06 20:59:47,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 48 [2021-10-06 20:59:48,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:48,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:48,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:48,056 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:48,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [602809082] [2021-10-06 20:59:48,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [602809082] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:59:48,057 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:59:48,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 20:59:48,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681398736] [2021-10-06 20:59:48,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 20:59:48,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:48,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 20:59:48,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 20:59:48,059 INFO L87 Difference]: Start difference. First operand 28 states and 44 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:48,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:48,079 INFO L93 Difference]: Finished difference Result 24 states and 36 transitions. [2021-10-06 20:59:48,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 20:59:48,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-06 20:59:48,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:48,081 INFO L225 Difference]: With dead ends: 24 [2021-10-06 20:59:48,081 INFO L226 Difference]: Without dead ends: 24 [2021-10-06 20:59:48,081 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 20:59:48,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-06 20:59:48,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-06 20:59:48,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:48,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 36 transitions. [2021-10-06 20:59:48,085 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 36 transitions. Word has length 5 [2021-10-06 20:59:48,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:48,086 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 36 transitions. [2021-10-06 20:59:48,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:48,087 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 36 transitions. [2021-10-06 20:59:48,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 20:59:48,087 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:48,087 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 20:59:48,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-06 20:59:48,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:59:48,304 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:59:48,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:48,306 INFO L82 PathProgramCache]: Analyzing trace with hash 433664219, now seen corresponding path program 1 times [2021-10-06 20:59:48,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:48,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1190241496] [2021-10-06 20:59:48,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:59:48,307 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:48,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:48,308 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:59:48,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-06 20:59:48,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:59:48,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 20:59:48,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:48,445 INFO L354 Elim1Store]: treesize reduction 82, result has 24.8 percent of original size [2021-10-06 20:59:48,446 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 34 treesize of output 50 [2021-10-06 20:59:48,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 87 [2021-10-06 20:59:48,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:48,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:48,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:48,734 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:48,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1190241496] [2021-10-06 20:59:48,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1190241496] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:59:48,735 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:59:48,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 20:59:48,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316525929] [2021-10-06 20:59:48,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 20:59:48,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:48,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 20:59:48,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:59:48,737 INFO L87 Difference]: Start difference. First operand 24 states and 36 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:48,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:48,750 INFO L93 Difference]: Finished difference Result 20 states and 28 transitions. [2021-10-06 20:59:48,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 20:59:48,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-06 20:59:48,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:48,752 INFO L225 Difference]: With dead ends: 20 [2021-10-06 20:59:48,752 INFO L226 Difference]: Without dead ends: 20 [2021-10-06 20:59:48,752 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:59:48,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-06 20:59:48,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-06 20:59:48,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:48,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions. [2021-10-06 20:59:48,755 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 5 [2021-10-06 20:59:48,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:48,756 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 28 transitions. [2021-10-06 20:59:48,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:48,756 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions. [2021-10-06 20:59:48,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-06 20:59:48,757 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:48,757 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:59:48,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-06 20:59:48,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:59:48,966 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:59:48,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:48,967 INFO L82 PathProgramCache]: Analyzing trace with hash -578589422, now seen corresponding path program 1 times [2021-10-06 20:59:48,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:48,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [56016638] [2021-10-06 20:59:48,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:59:48,969 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:48,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:48,970 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:59:48,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-06 20:59:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-06 20:59:49,069 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-06 20:59:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-06 20:59:49,184 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-06 20:59:49,185 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-06 20:59:49,186 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 20:59:49,188 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-06 20:59:49,188 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-06 20:59:49,188 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-06 20:59:49,188 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-06 20:59:49,189 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-06 20:59:49,189 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-06 20:59:49,189 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-06 20:59:49,189 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-06 20:59:49,189 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 20:59:49,190 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-06 20:59:49,190 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-06 20:59:49,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-06 20:59:49,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:59:49,405 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-06 20:59:49,405 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-06 20:59:49,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 08:59:49 BasicIcfg [2021-10-06 20:59:49,447 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-06 20:59:49,449 INFO L168 Benchmark]: Toolchain (without parser) took 14281.16 ms. Allocated memory was 176.2 MB in the beginning and 212.9 MB in the end (delta: 36.7 MB). Free memory was 149.6 MB in the beginning and 161.3 MB in the end (delta: -11.8 MB). Peak memory consumption was 25.9 MB. Max. memory is 8.0 GB. [2021-10-06 20:59:49,450 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 176.2 MB. Free memory is still 146.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-06 20:59:49,451 INFO L168 Benchmark]: CACSL2BoogieTranslator took 355.93 ms. Allocated memory is still 176.2 MB. Free memory was 149.2 MB in the beginning and 138.3 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-06 20:59:49,458 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.16 ms. Allocated memory is still 176.2 MB. Free memory was 138.3 MB in the beginning and 136.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-06 20:59:49,459 INFO L168 Benchmark]: Boogie Preprocessor took 31.33 ms. Allocated memory is still 176.2 MB. Free memory was 136.6 MB in the beginning and 135.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-06 20:59:49,460 INFO L168 Benchmark]: RCFGBuilder took 908.01 ms. Allocated memory is still 176.2 MB. Free memory was 135.2 MB in the beginning and 152.4 MB in the end (delta: -17.3 MB). Peak memory consumption was 19.6 MB. Max. memory is 8.0 GB. [2021-10-06 20:59:49,460 INFO L168 Benchmark]: TraceAbstraction took 12927.98 ms. Allocated memory was 176.2 MB in the beginning and 212.9 MB in the end (delta: 36.7 MB). Free memory was 151.9 MB in the beginning and 161.3 MB in the end (delta: -9.4 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. [2021-10-06 20:59:49,466 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 176.2 MB. Free memory is still 146.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 355.93 ms. Allocated memory is still 176.2 MB. Free memory was 149.2 MB in the beginning and 138.3 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 42.16 ms. Allocated memory is still 176.2 MB. Free memory was 138.3 MB in the beginning and 136.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 31.33 ms. Allocated memory is still 176.2 MB. Free memory was 136.6 MB in the beginning and 135.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 908.01 ms. Allocated memory is still 176.2 MB. Free memory was 135.2 MB in the beginning and 152.4 MB in the end (delta: -17.3 MB). Peak memory consumption was 19.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 12927.98 ms. Allocated memory was 176.2 MB in the beginning and 212.9 MB in the end (delta: 36.7 MB). Free memory was 151.9 MB in the beginning and 161.3 MB in the end (delta: -9.4 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9009.0ms, 105 PlacesBefore, 30 PlacesAfterwards, 101 TransitionsBefore, 23 TransitionsAfterwards, 100 CoEnabledTransitionPairs, 7 FixpointIterations, 84 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 0 ConcurrentYvCompositions, 3 ChoiceCompositions, 111 TotalNumberOfCompositions, 225 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 225, positive: 225, positive conditional: 0, positive unconditional: 225, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 69, positive: 69, positive conditional: 0, positive unconditional: 69, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 69, positive: 69, positive conditional: 0, positive unconditional: 69, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 225, positive: 156, positive conditional: 0, positive unconditional: 156, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 69, unknown conditional: 0, unknown unconditional: 69] , Statistics on independence cache: Total cache size (in pairs): 20, Positive cache size: 20, Positive conditional cache size: 0, Positive unconditional cache size: 20, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 81]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 81. Possible FailurePath: [L38] 0 int cardSet_0, cardRarity_1, cardId_2, cardType_3, cardSet_4, cardRarity_5, cardId_6, cardType_7, result_8, result_9; [L59] 0 pthread_t t1, t2; [L61] 0 cardSet_0 = __VERIFIER_nondet_int() [L62] 0 cardRarity_1 = __VERIFIER_nondet_int() [L63] 0 cardId_2 = __VERIFIER_nondet_int() [L64] 0 cardType_3 = __VERIFIER_nondet_int() [L65] 0 cardSet_4 = __VERIFIER_nondet_int() [L66] 0 cardRarity_5 = __VERIFIER_nondet_int() [L67] 0 cardId_6 = __VERIFIER_nondet_int() [L68] 0 cardType_7 = __VERIFIER_nondet_int() [L69] 0 result_8 = __VERIFIER_nondet_int() [L70] 0 result_9 = __VERIFIER_nondet_int() [L73] FCALL, FORK 0 pthread_create(&t1, NULL, thread1, NULL) [L42] 1 result_8 = cardSet_0 - cardSet_4 [L43] EXPR 1 result_8 == 0 ? cardRarity_1 - cardRarity_5 : result_8 [L43] 1 result_8 = result_8 == 0 ? cardRarity_1 - cardRarity_5 : result_8 [L44] EXPR 1 result_8 == 0 ? cardId_2 - cardId_6 : result_8 [L44] 1 result_8 = result_8 == 0 ? cardId_2 - cardId_6 : result_8 [L45] EXPR 1 result_8 == 0 ? cardType_3 - cardType_7 : result_8 [L45] 1 result_8 = result_8 == 0 ? cardType_3 - cardType_7 : result_8 [L74] FCALL, FORK 0 pthread_create(&t2, NULL, thread2, NULL) VAL [cardId_2=0, cardId_6=0, cardRarity_1=0, cardRarity_5=0, cardSet_0=1073741822, cardSet_4=1073741822, cardType_3=-2147483648, cardType_7=0, result_8=-2147483648] [L51] 2 result_9 = cardSet_4 - cardSet_0 [L52] EXPR 2 result_9 == 0 ? cardRarity_5 - cardRarity_1 : result_9 [L52] 2 result_9 = result_9 == 0 ? cardRarity_5 - cardRarity_1 : result_9 [L53] EXPR 2 result_9 == 0 ? cardId_6 - cardId_2 : result_9 [L53] 2 result_9 = result_9 == 0 ? cardId_6 - cardId_2 : result_9 [L54] EXPR 2 result_9 == 0 ? cardType_7 - cardType_3 : result_9 [L54] 2 result_9 = result_9 == 0 ? cardType_7 - cardType_3 : result_9 [L75] 0 \read(t1) VAL [cardId_2=0, cardId_6=0, cardRarity_1=0, cardRarity_5=0, cardSet_0=1073741822, cardSet_4=1073741822, cardType_3=-2147483648, cardType_7=0, result_8=-2147483648, result_9=-2147483648] [L75] FCALL, JOIN 1 pthread_join(t1, 0) VAL [cardId_2=0, cardId_6=0, cardRarity_1=0, cardRarity_5=0, cardSet_0=1073741822, cardSet_4=1073741822, cardType_3=-2147483648, cardType_7=0, result_8=-2147483648, result_9=-2147483648] [L76] 0 \read(t2) VAL [cardId_2=0, cardId_6=0, cardRarity_1=0, cardRarity_5=0, cardSet_0=1073741822, cardSet_4=1073741822, cardType_3=-2147483648, cardType_7=0, result_8=-2147483648, result_9=-2147483648] [L76] FCALL, JOIN 2 pthread_join(t2, 0) VAL [cardId_2=0, cardId_6=0, cardRarity_1=0, cardRarity_5=0, cardSet_0=1073741822, cardSet_4=1073741822, cardType_3=-2147483648, cardType_7=0, result_8=-2147483648, result_9=-2147483648] [L35] COND FALSE 0 !(!cond) [L35] COND FALSE 0 !(!cond) [L35] COND FALSE 0 !(!cond) [L81] 0 reach_error() VAL [cardId_2=0, cardId_6=0, cardRarity_1=0, cardRarity_5=0, cardSet_0=1073741822, cardSet_4=1073741822, cardType_3=-2147483648, cardType_7=0, result_8=-2147483648, result_9=-2147483648] - UnprovableResult [Line: 73]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 73]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 74]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 74]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 75]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 75]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 76]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 76]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 58]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 73]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 74]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 107 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 12718.3ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 9.4ms, AutomataDifference: 132.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9061.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 51 SDtfs, 52 SDslu, 0 SDs, 0 SdLazy, 17 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 53.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 95.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 36.6ms AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 60.3ms SsaConstructionTime, 138.7ms SatisfiabilityAnalysisTime, 1616.7ms InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 24 ConstructedInterpolants, 4 QuantifiedInterpolants, 272 SizeOfPredicates, 12 NumberOfNonLiveVariables, 137 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-06 20:59:49,520 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...