./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/nla-digbench-scaling/hard-u_unwindbound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3e5ce664 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/nla-digbench-scaling/hard-u_unwindbound50.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 43772e76f997756c105b42bdc7ff6dcb71aa103f .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/nla-digbench-scaling/hard-u_unwindbound50.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 43772e76f997756c105b42bdc7ff6dcb71aa103f ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-3e5ce66 [2020-12-02 21:39:06,597 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 21:39:06,600 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 21:39:06,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 21:39:06,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 21:39:06,647 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 21:39:06,649 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 21:39:06,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 21:39:06,654 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 21:39:06,655 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 21:39:06,657 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 21:39:06,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 21:39:06,659 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 21:39:06,660 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 21:39:06,661 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 21:39:06,663 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 21:39:06,664 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 21:39:06,665 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 21:39:06,667 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 21:39:06,669 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 21:39:06,671 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 21:39:06,672 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 21:39:06,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 21:39:06,675 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 21:39:06,682 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 21:39:06,682 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 21:39:06,683 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 21:39:06,686 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 21:39:06,687 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 21:39:06,688 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 21:39:06,688 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 21:39:06,690 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 21:39:06,692 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 21:39:06,696 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 21:39:06,697 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 21:39:06,698 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 21:39:06,699 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 21:39:06,699 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 21:39:06,699 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 21:39:06,700 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 21:39:06,702 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 21:39:06,704 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 21:39:06,769 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 21:39:06,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 21:39:06,771 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 21:39:06,773 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 21:39:06,773 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 21:39:06,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 21:39:06,774 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 21:39:06,774 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 21:39:06,774 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 21:39:06,774 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 21:39:06,775 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 21:39:06,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 21:39:06,776 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 21:39:06,776 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 21:39:06,777 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 21:39:06,777 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 21:39:06,777 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 21:39:06,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 21:39:06,778 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 21:39:06,778 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 21:39:06,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 21:39:06,778 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 21:39:06,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 21:39:06,779 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 21:39:06,779 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 21:39:06,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 21:39:06,780 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 21:39:06,780 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 21:39:06,781 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43772e76f997756c105b42bdc7ff6dcb71aa103f [2020-12-02 21:39:07,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 21:39:07,255 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 21:39:07,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 21:39:07,260 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 21:39:07,260 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 21:39:07,262 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/hard-u_unwindbound50.c [2020-12-02 21:39:07,358 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d7544cfe/1c0d715c18934d3aa42fc8ba834ba057/FLAG4264b1a9d [2020-12-02 21:39:07,981 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 21:39:07,982 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-u_unwindbound50.c [2020-12-02 21:39:07,991 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d7544cfe/1c0d715c18934d3aa42fc8ba834ba057/FLAG4264b1a9d [2020-12-02 21:39:08,346 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d7544cfe/1c0d715c18934d3aa42fc8ba834ba057 [2020-12-02 21:39:08,349 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 21:39:08,352 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 21:39:08,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 21:39:08,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 21:39:08,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 21:39:08,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:39:08" (1/1) ... [2020-12-02 21:39:08,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48ca0d12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:39:08, skipping insertion in model container [2020-12-02 21:39:08,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:39:08" (1/1) ... [2020-12-02 21:39:08,376 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 21:39:08,417 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 21:39:08,649 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-u_unwindbound50.c[537,550] [2020-12-02 21:39:08,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 21:39:08,681 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 21:39:08,700 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-u_unwindbound50.c[537,550] [2020-12-02 21:39:08,709 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 21:39:08,729 INFO L208 MainTranslator]: Completed translation [2020-12-02 21:39:08,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:39:08 WrapperNode [2020-12-02 21:39:08,730 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 21:39:08,732 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 21:39:08,732 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 21:39:08,733 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 21:39:08,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:39:08" (1/1) ... [2020-12-02 21:39:08,753 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:39:08" (1/1) ... [2020-12-02 21:39:08,795 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 21:39:08,797 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 21:39:08,797 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 21:39:08,797 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 21:39:08,810 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:39:08" (1/1) ... [2020-12-02 21:39:08,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:39:08" (1/1) ... [2020-12-02 21:39:08,812 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:39:08" (1/1) ... [2020-12-02 21:39:08,813 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:39:08" (1/1) ... [2020-12-02 21:39:08,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:39:08" (1/1) ... [2020-12-02 21:39:08,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:39:08" (1/1) ... [2020-12-02 21:39:08,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:39:08" (1/1) ... [2020-12-02 21:39:08,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 21:39:08,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 21:39:08,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 21:39:08,829 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 21:39:08,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:39:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 21:39:08,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 21:39:08,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 21:39:08,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 21:39:08,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 21:39:09,472 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 21:39:09,472 INFO L298 CfgBuilder]: Removed 22 assume(true) statements. [2020-12-02 21:39:09,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:39:09 BoogieIcfgContainer [2020-12-02 21:39:09,474 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 21:39:09,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 21:39:09,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 21:39:09,480 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 21:39:09,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 09:39:08" (1/3) ... [2020-12-02 21:39:09,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37325125 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 09:39:09, skipping insertion in model container [2020-12-02 21:39:09,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:39:08" (2/3) ... [2020-12-02 21:39:09,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37325125 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 09:39:09, skipping insertion in model container [2020-12-02 21:39:09,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:39:09" (3/3) ... [2020-12-02 21:39:09,484 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-u_unwindbound50.c [2020-12-02 21:39:09,500 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 21:39:09,504 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-02 21:39:09,517 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-02 21:39:09,546 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 21:39:09,546 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 21:39:09,546 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 21:39:09,546 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 21:39:09,547 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 21:39:09,547 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 21:39:09,547 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 21:39:09,547 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 21:39:09,565 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-12-02 21:39:09,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 21:39:09,571 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:39:09,572 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:39:09,573 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:39:09,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:39:09,579 INFO L82 PathProgramCache]: Analyzing trace with hash 119446382, now seen corresponding path program 1 times [2020-12-02 21:39:09,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:39:09,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036382302] [2020-12-02 21:39:09,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:39:09,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:39:09,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:39:09,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036382302] [2020-12-02 21:39:09,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:39:09,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 21:39:09,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019029946] [2020-12-02 21:39:09,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 21:39:09,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:39:09,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 21:39:09,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 21:39:09,785 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-12-02 21:39:09,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:39:09,808 INFO L93 Difference]: Finished difference Result 79 states and 106 transitions. [2020-12-02 21:39:09,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 21:39:09,810 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-02 21:39:09,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:39:09,821 INFO L225 Difference]: With dead ends: 79 [2020-12-02 21:39:09,822 INFO L226 Difference]: Without dead ends: 37 [2020-12-02 21:39:09,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 21:39:09,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-02 21:39:09,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-02 21:39:09,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-02 21:39:09,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-12-02 21:39:09,875 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 8 [2020-12-02 21:39:09,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:39:09,875 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-12-02 21:39:09,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 21:39:09,876 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-12-02 21:39:09,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 21:39:09,877 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:39:09,877 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:39:09,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 21:39:09,878 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:39:09,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:39:09,879 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2020-12-02 21:39:09,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:39:09,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005835597] [2020-12-02 21:39:09,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:39:09,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:39:09,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:39:09,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005835597] [2020-12-02 21:39:09,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:39:09,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 21:39:09,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12027127] [2020-12-02 21:39:09,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 21:39:09,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:39:09,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 21:39:09,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 21:39:09,980 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2020-12-02 21:39:10,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:39:10,151 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2020-12-02 21:39:10,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 21:39:10,152 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-02 21:39:10,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:39:10,153 INFO L225 Difference]: With dead ends: 61 [2020-12-02 21:39:10,155 INFO L226 Difference]: Without dead ends: 59 [2020-12-02 21:39:10,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-02 21:39:10,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-02 21:39:10,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 35. [2020-12-02 21:39:10,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-02 21:39:10,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-12-02 21:39:10,174 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2020-12-02 21:39:10,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:39:10,175 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-12-02 21:39:10,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 21:39:10,175 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-12-02 21:39:10,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 21:39:10,176 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:39:10,176 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:39:10,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 21:39:10,177 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:39:10,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:39:10,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1986071569, now seen corresponding path program 1 times [2020-12-02 21:39:10,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:39:10,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953342369] [2020-12-02 21:39:10,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:39:10,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:39:10,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:39:10,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953342369] [2020-12-02 21:39:10,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:39:10,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 21:39:10,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477962260] [2020-12-02 21:39:10,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 21:39:10,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:39:10,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 21:39:10,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 21:39:10,262 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 4 states. [2020-12-02 21:39:10,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:39:10,309 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2020-12-02 21:39:10,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 21:39:10,312 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-02 21:39:10,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:39:10,314 INFO L225 Difference]: With dead ends: 56 [2020-12-02 21:39:10,314 INFO L226 Difference]: Without dead ends: 37 [2020-12-02 21:39:10,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 21:39:10,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-02 21:39:10,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-02 21:39:10,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-02 21:39:10,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-12-02 21:39:10,331 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 10 [2020-12-02 21:39:10,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:39:10,331 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-12-02 21:39:10,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 21:39:10,332 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-12-02 21:39:10,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 21:39:10,333 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:39:10,333 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:39:10,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 21:39:10,333 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:39:10,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:39:10,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1985334737, now seen corresponding path program 1 times [2020-12-02 21:39:10,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:39:10,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576790927] [2020-12-02 21:39:10,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:39:10,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:39:10,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:39:10,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576790927] [2020-12-02 21:39:10,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:39:10,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 21:39:10,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911898817] [2020-12-02 21:39:10,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 21:39:10,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:39:10,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 21:39:10,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 21:39:10,460 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2020-12-02 21:39:10,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:39:10,608 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2020-12-02 21:39:10,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 21:39:10,612 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-02 21:39:10,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:39:10,613 INFO L225 Difference]: With dead ends: 56 [2020-12-02 21:39:10,613 INFO L226 Difference]: Without dead ends: 54 [2020-12-02 21:39:10,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-02 21:39:10,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-02 21:39:10,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2020-12-02 21:39:10,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-02 21:39:10,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-12-02 21:39:10,625 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 10 [2020-12-02 21:39:10,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:39:10,626 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-12-02 21:39:10,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 21:39:10,627 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-12-02 21:39:10,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 21:39:10,628 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:39:10,628 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:39:10,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-02 21:39:10,639 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:39:10,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:39:10,643 INFO L82 PathProgramCache]: Analyzing trace with hash -941046702, now seen corresponding path program 1 times [2020-12-02 21:39:10,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:39:10,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202957090] [2020-12-02 21:39:10,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:39:10,690 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:39:10,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1634697762] [2020-12-02 21:39:10,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:39:10,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:39:10,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-02 21:39:10,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:39:10,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:39:10,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202957090] [2020-12-02 21:39:10,945 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:39:10,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634697762] [2020-12-02 21:39:10,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:39:10,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-02 21:39:10,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880787102] [2020-12-02 21:39:10,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 21:39:10,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:39:10,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 21:39:10,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-02 21:39:10,948 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-12-02 21:39:11,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:39:11,154 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2020-12-02 21:39:11,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 21:39:11,155 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-02 21:39:11,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:39:11,156 INFO L225 Difference]: With dead ends: 81 [2020-12-02 21:39:11,157 INFO L226 Difference]: Without dead ends: 58 [2020-12-02 21:39:11,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-12-02 21:39:11,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-02 21:39:11,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2020-12-02 21:39:11,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-02 21:39:11,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2020-12-02 21:39:11,173 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 12 [2020-12-02 21:39:11,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:39:11,174 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2020-12-02 21:39:11,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 21:39:11,174 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2020-12-02 21:39:11,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-02 21:39:11,175 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:39:11,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:39:11,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:39:11,391 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:39:11,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:39:11,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1803611644, now seen corresponding path program 1 times [2020-12-02 21:39:11,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:39:11,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545773989] [2020-12-02 21:39:11,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:39:11,410 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:39:11,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2060013083] [2020-12-02 21:39:11,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:39:11,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:39:11,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-02 21:39:11,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:39:11,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:39:11,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545773989] [2020-12-02 21:39:11,604 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:39:11,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060013083] [2020-12-02 21:39:11,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:39:11,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-02 21:39:11,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377042036] [2020-12-02 21:39:11,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-02 21:39:11,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:39:11,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-02 21:39:11,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-02 21:39:11,608 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand 7 states. [2020-12-02 21:39:11,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:39:11,887 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-12-02 21:39:11,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-02 21:39:11,888 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-12-02 21:39:11,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:39:11,889 INFO L225 Difference]: With dead ends: 53 [2020-12-02 21:39:11,889 INFO L226 Difference]: Without dead ends: 41 [2020-12-02 21:39:11,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-12-02 21:39:11,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-02 21:39:11,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-12-02 21:39:11,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-02 21:39:11,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-12-02 21:39:11,908 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 16 [2020-12-02 21:39:11,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:39:11,910 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-12-02 21:39:11,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-02 21:39:11,910 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-12-02 21:39:11,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-02 21:39:11,911 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:39:11,911 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:39:12,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:39:12,113 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:39:12,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:39:12,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1571159167, now seen corresponding path program 1 times [2020-12-02 21:39:12,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:39:12,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156467773] [2020-12-02 21:39:12,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:39:12,136 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:39:12,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1631631507] [2020-12-02 21:39:12,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:39:12,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:39:12,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-02 21:39:12,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:39:12,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:39:12,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156467773] [2020-12-02 21:39:12,264 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:39:12,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631631507] [2020-12-02 21:39:12,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-02 21:39:12,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-02 21:39:12,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059695345] [2020-12-02 21:39:12,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 21:39:12,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:39:12,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 21:39:12,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 21:39:12,275 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 5 states. [2020-12-02 21:39:12,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:39:12,311 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2020-12-02 21:39:12,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 21:39:12,311 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-02 21:39:12,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:39:12,312 INFO L225 Difference]: With dead ends: 62 [2020-12-02 21:39:12,313 INFO L226 Difference]: Without dead ends: 43 [2020-12-02 21:39:12,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 21:39:12,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-12-02 21:39:12,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-12-02 21:39:12,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-02 21:39:12,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-12-02 21:39:12,336 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 18 [2020-12-02 21:39:12,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:39:12,336 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-12-02 21:39:12,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 21:39:12,336 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-12-02 21:39:12,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-02 21:39:12,337 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:39:12,337 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:39:12,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:39:12,551 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:39:12,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:39:12,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1642186908, now seen corresponding path program 1 times [2020-12-02 21:39:12,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:39:12,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402535048] [2020-12-02 21:39:12,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:39:12,569 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:39:12,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [376047033] [2020-12-02 21:39:12,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:39:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:39:12,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-02 21:39:12,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:39:12,942 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:39:12,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402535048] [2020-12-02 21:39:12,943 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:39:12,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376047033] [2020-12-02 21:39:12,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-02 21:39:12,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-02 21:39:12,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804511074] [2020-12-02 21:39:12,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-02 21:39:12,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:39:12,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-02 21:39:12,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-02 21:39:12,946 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 8 states. [2020-12-02 21:39:13,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:39:13,503 INFO L93 Difference]: Finished difference Result 83 states and 91 transitions. [2020-12-02 21:39:13,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-02 21:39:13,504 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-12-02 21:39:13,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:39:13,509 INFO L225 Difference]: With dead ends: 83 [2020-12-02 21:39:13,509 INFO L226 Difference]: Without dead ends: 71 [2020-12-02 21:39:13,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-12-02 21:39:13,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-12-02 21:39:13,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 55. [2020-12-02 21:39:13,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-02 21:39:13,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2020-12-02 21:39:13,529 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 20 [2020-12-02 21:39:13,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:39:13,532 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2020-12-02 21:39:13,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-02 21:39:13,532 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2020-12-02 21:39:13,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-02 21:39:13,533 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:39:13,533 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:39:13,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:39:13,738 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:39:13,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:39:13,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1958905870, now seen corresponding path program 1 times [2020-12-02 21:39:13,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:39:13,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135600163] [2020-12-02 21:39:13,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:39:13,766 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:39:13,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [245325060] [2020-12-02 21:39:13,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:39:13,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:39:13,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-02 21:39:13,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:39:13,979 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:39:13,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135600163] [2020-12-02 21:39:13,980 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:39:13,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245325060] [2020-12-02 21:39:13,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-02 21:39:13,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-02 21:39:13,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431854746] [2020-12-02 21:39:13,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-02 21:39:13,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:39:13,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-02 21:39:13,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-02 21:39:13,984 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand 7 states. [2020-12-02 21:39:18,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:39:18,474 INFO L93 Difference]: Finished difference Result 74 states and 83 transitions. [2020-12-02 21:39:18,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-02 21:39:18,475 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-12-02 21:39:18,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:39:18,476 INFO L225 Difference]: With dead ends: 74 [2020-12-02 21:39:18,476 INFO L226 Difference]: Without dead ends: 70 [2020-12-02 21:39:18,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-12-02 21:39:18,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-12-02 21:39:18,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2020-12-02 21:39:18,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-02 21:39:18,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 74 transitions. [2020-12-02 21:39:18,484 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 74 transitions. Word has length 24 [2020-12-02 21:39:18,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:39:18,485 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 74 transitions. [2020-12-02 21:39:18,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-02 21:39:18,485 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 74 transitions. [2020-12-02 21:39:18,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-02 21:39:18,486 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:39:18,486 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:39:18,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:39:18,701 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:39:18,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:39:18,702 INFO L82 PathProgramCache]: Analyzing trace with hash 2018616451, now seen corresponding path program 1 times [2020-12-02 21:39:18,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:39:18,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904389363] [2020-12-02 21:39:18,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:39:18,721 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:39:18,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [186450579] [2020-12-02 21:39:18,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:39:18,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:39:18,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-02 21:39:18,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:39:18,874 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:39:18,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904389363] [2020-12-02 21:39:18,875 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:39:18,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186450579] [2020-12-02 21:39:18,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-02 21:39:18,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-02 21:39:18,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455717762] [2020-12-02 21:39:18,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 21:39:18,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:39:18,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 21:39:18,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 21:39:18,878 INFO L87 Difference]: Start difference. First operand 64 states and 74 transitions. Second operand 6 states. [2020-12-02 21:39:18,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:39:18,903 INFO L93 Difference]: Finished difference Result 71 states and 80 transitions. [2020-12-02 21:39:18,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 21:39:18,904 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-12-02 21:39:18,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:39:18,905 INFO L225 Difference]: With dead ends: 71 [2020-12-02 21:39:18,905 INFO L226 Difference]: Without dead ends: 65 [2020-12-02 21:39:18,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 21:39:18,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-12-02 21:39:18,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2020-12-02 21:39:18,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-02 21:39:18,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 73 transitions. [2020-12-02 21:39:18,912 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 73 transitions. Word has length 27 [2020-12-02 21:39:18,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:39:18,913 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 73 transitions. [2020-12-02 21:39:18,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 21:39:18,913 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 73 transitions. [2020-12-02 21:39:18,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-02 21:39:18,914 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:39:18,915 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:39:19,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:39:19,129 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:39:19,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:39:19,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1875627766, now seen corresponding path program 1 times [2020-12-02 21:39:19,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:39:19,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671895100] [2020-12-02 21:39:19,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:39:19,159 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:39:19,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [782730004] [2020-12-02 21:39:19,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:39:19,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:39:19,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-02 21:39:19,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:39:19,300 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:39:19,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671895100] [2020-12-02 21:39:19,300 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:39:19,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782730004] [2020-12-02 21:39:19,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-02 21:39:19,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-02 21:39:19,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160616910] [2020-12-02 21:39:19,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 21:39:19,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:39:19,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 21:39:19,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 21:39:19,308 INFO L87 Difference]: Start difference. First operand 64 states and 73 transitions. Second operand 6 states. [2020-12-02 21:39:19,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:39:19,363 INFO L93 Difference]: Finished difference Result 94 states and 110 transitions. [2020-12-02 21:39:19,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-02 21:39:19,364 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-12-02 21:39:19,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:39:19,367 INFO L225 Difference]: With dead ends: 94 [2020-12-02 21:39:19,367 INFO L226 Difference]: Without dead ends: 66 [2020-12-02 21:39:19,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-02 21:39:19,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-02 21:39:19,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-12-02 21:39:19,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-02 21:39:19,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 75 transitions. [2020-12-02 21:39:19,390 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 75 transitions. Word has length 28 [2020-12-02 21:39:19,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:39:19,390 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 75 transitions. [2020-12-02 21:39:19,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 21:39:19,391 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 75 transitions. [2020-12-02 21:39:19,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-02 21:39:19,394 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:39:19,395 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-02 21:39:19,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:39:19,609 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:39:19,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:39:19,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1711245194, now seen corresponding path program 2 times [2020-12-02 21:39:19,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:39:19,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696510170] [2020-12-02 21:39:19,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:39:19,637 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:39:19,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [844592967] [2020-12-02 21:39:19,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:39:20,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-02 21:39:20,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-02 21:39:20,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-02 21:39:20,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:39:20,401 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:39:20,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696510170] [2020-12-02 21:39:20,402 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:39:20,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844592967] [2020-12-02 21:39:20,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-02 21:39:20,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-02 21:39:20,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133928481] [2020-12-02 21:39:20,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-02 21:39:20,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:39:20,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-02 21:39:20,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-12-02 21:39:20,405 INFO L87 Difference]: Start difference. First operand 66 states and 75 transitions. Second operand 11 states. [2020-12-02 21:39:21,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:39:21,398 INFO L93 Difference]: Finished difference Result 103 states and 117 transitions. [2020-12-02 21:39:21,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-02 21:39:21,399 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-12-02 21:39:21,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:39:21,399 INFO L225 Difference]: With dead ends: 103 [2020-12-02 21:39:21,400 INFO L226 Difference]: Without dead ends: 93 [2020-12-02 21:39:21,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-12-02 21:39:21,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-12-02 21:39:21,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 74. [2020-12-02 21:39:21,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-02 21:39:21,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 85 transitions. [2020-12-02 21:39:21,409 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 85 transitions. Word has length 28 [2020-12-02 21:39:21,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:39:21,409 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 85 transitions. [2020-12-02 21:39:21,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-02 21:39:21,410 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 85 transitions. [2020-12-02 21:39:21,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-02 21:39:21,411 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:39:21,411 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:39:21,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-02 21:39:21,618 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:39:21,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:39:21,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1339843922, now seen corresponding path program 1 times [2020-12-02 21:39:21,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:39:21,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101641425] [2020-12-02 21:39:21,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:39:21,647 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:39:21,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1020791762] [2020-12-02 21:39:21,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:39:26,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:39:26,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-02 21:39:26,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:39:26,585 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:26,633 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-02 21:39:26,645 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-02 21:39:26,796 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-02 21:39:27,083 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-02 21:39:27,577 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:29,163 INFO L757 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:31,176 INFO L757 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:33,289 INFO L757 QuantifierPusher]: Run 40 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:35,447 INFO L757 QuantifierPusher]: Run 50 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:36,761 INFO L757 QuantifierPusher]: Run 60 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:37,888 INFO L757 QuantifierPusher]: Run 70 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:38,932 INFO L757 QuantifierPusher]: Run 80 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:40,297 INFO L757 QuantifierPusher]: Run 90 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:41,585 INFO L757 QuantifierPusher]: Run 100 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:42,769 INFO L757 QuantifierPusher]: Run 110 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:43,841 INFO L757 QuantifierPusher]: Run 120 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:44,745 INFO L757 QuantifierPusher]: Run 130 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:48,259 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:52,866 INFO L757 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:39:57,805 INFO L757 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:40:04,882 INFO L757 QuantifierPusher]: Run 40 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:40:16,974 INFO L757 QuantifierPusher]: Run 50 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:40:36,180 INFO L757 QuantifierPusher]: Run 60 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-02 21:40:39,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101641425] [2020-12-02 21:40:39,118 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:40:39,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020791762] [2020-12-02 21:40:39,119 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: variable got div captured [2020-12-02 21:40:39,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:40:39,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-02 21:40:39,119 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-02 21:40:39,119 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-02 21:40:39,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:40:39,346 WARN L254 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-02 21:40:39,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 09:40:39 BoogieIcfgContainer [2020-12-02 21:40:39,346 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 21:40:39,347 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 21:40:39,347 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 21:40:39,348 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 21:40:39,348 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:39:09" (3/4) ... [2020-12-02 21:40:39,352 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-02 21:40:39,352 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 21:40:39,354 INFO L168 Benchmark]: Toolchain (without parser) took 91001.80 ms. Allocated memory was 44.0 MB in the beginning and 209.7 MB in the end (delta: 165.7 MB). Free memory was 21.1 MB in the beginning and 96.0 MB in the end (delta: -75.0 MB). Peak memory consumption was 92.7 MB. Max. memory is 16.1 GB. [2020-12-02 21:40:39,355 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 44.0 MB. Free memory was 26.7 MB in the beginning and 26.6 MB in the end (delta: 52.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 21:40:39,355 INFO L168 Benchmark]: CACSL2BoogieTranslator took 377.28 ms. Allocated memory is still 44.0 MB. Free memory was 20.9 MB in the beginning and 20.2 MB in the end (delta: 692.0 kB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-12-02 21:40:39,356 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.72 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 20.2 MB in the beginning and 38.9 MB in the end (delta: -18.7 MB). Peak memory consumption was 2.6 MB. Max. memory is 16.1 GB. [2020-12-02 21:40:39,357 INFO L168 Benchmark]: Boogie Preprocessor took 31.46 ms. Allocated memory is still 54.5 MB. Free memory was 38.9 MB in the beginning and 37.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 21:40:39,357 INFO L168 Benchmark]: RCFGBuilder took 645.65 ms. Allocated memory is still 54.5 MB. Free memory was 37.6 MB in the beginning and 36.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.1 GB. [2020-12-02 21:40:39,358 INFO L168 Benchmark]: TraceAbstraction took 89870.36 ms. Allocated memory was 54.5 MB in the beginning and 209.7 MB in the end (delta: 155.2 MB). Free memory was 36.0 MB in the beginning and 96.0 MB in the end (delta: -60.1 MB). Peak memory consumption was 127.3 MB. Max. memory is 16.1 GB. [2020-12-02 21:40:39,358 INFO L168 Benchmark]: Witness Printer took 4.89 ms. Allocated memory is still 209.7 MB. Free memory is still 96.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 21:40:39,361 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 44.0 MB. Free memory was 26.7 MB in the beginning and 26.6 MB in the end (delta: 52.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 377.28 ms. Allocated memory is still 44.0 MB. Free memory was 20.9 MB in the beginning and 20.2 MB in the end (delta: 692.0 kB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 63.72 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 20.2 MB in the beginning and 38.9 MB in the end (delta: -18.7 MB). Peak memory consumption was 2.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.46 ms. Allocated memory is still 54.5 MB. Free memory was 38.9 MB in the beginning and 37.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 645.65 ms. Allocated memory is still 54.5 MB. Free memory was 37.6 MB in the beginning and 36.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 89870.36 ms. Allocated memory was 54.5 MB in the beginning and 209.7 MB in the end (delta: 155.2 MB). Free memory was 36.0 MB in the beginning and 96.0 MB in the end (delta: -60.1 MB). Peak memory consumption was 127.3 MB. Max. memory is 16.1 GB. * Witness Printer took 4.89 ms. Allocated memory is still 209.7 MB. Free memory is still 96.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L22] int counter = 0; [L24] unsigned int A, B; [L25] unsigned int r, d, p, q; [L26] A = __VERIFIER_nondet_uint() [L27] B = __VERIFIER_nondet_uint() [L12] COND FALSE !(!cond) [L30] r = A [L31] d = B [L32] p = 1 [L33] q = 0 [L35] EXPR counter++ [L35] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L39] COND FALSE !(!(r >= d)) [L41] d = 2 * d [L42] p = 2 * p [L35] EXPR counter++ [L35] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L39] COND TRUE !(r >= d) [L45] EXPR counter++ [L45] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L49] COND FALSE !(!(p != 1)) [L51] d = d / 2 [L52] p = p / 2 [L53] COND TRUE r >= d [L54] r = r - d [L55] q = q + p [L45] EXPR counter++ [L45] COND TRUE counter++<50 [L15] COND TRUE !(cond) [L17] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 89.7s, OverallIterations: 13, TraceHistogramMax: 3, AutomataDifference: 7.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 394 SDtfs, 783 SDslu, 796 SDs, 0 SdLazy, 631 SolverSat, 126 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 5.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 211 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 94 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 209 NumberOfCodeBlocks, 209 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 197 ConstructedInterpolants, 0 QuantifiedInterpolants, 30603 SizeOfPredicates, 44 NumberOfNonLiveVariables, 809 ConjunctsInSsa, 136 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 0/59 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 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-3e5ce66 [2020-12-02 21:40:41,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 21:40:41,812 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 21:40:41,867 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 21:40:41,867 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 21:40:41,873 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 21:40:41,876 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 21:40:41,883 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 21:40:41,886 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 21:40:41,890 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 21:40:41,891 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 21:40:41,896 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 21:40:41,897 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 21:40:41,898 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 21:40:41,899 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 21:40:41,907 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 21:40:41,908 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 21:40:41,912 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 21:40:41,914 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 21:40:41,920 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 21:40:41,922 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 21:40:41,927 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 21:40:41,929 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 21:40:41,929 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 21:40:41,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 21:40:41,934 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 21:40:41,935 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 21:40:41,936 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 21:40:41,938 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 21:40:41,939 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 21:40:41,939 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 21:40:41,940 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 21:40:41,942 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 21:40:41,943 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 21:40:41,944 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 21:40:41,944 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 21:40:41,945 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 21:40:41,945 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 21:40:41,945 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 21:40:41,947 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 21:40:41,953 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 21:40:41,954 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-02 21:40:41,988 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 21:40:41,988 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 21:40:41,990 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 21:40:41,990 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 21:40:41,990 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 21:40:41,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 21:40:41,991 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 21:40:41,991 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 21:40:41,991 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 21:40:41,992 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 21:40:41,992 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 21:40:41,992 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 21:40:41,992 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-02 21:40:41,993 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-02 21:40:41,993 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 21:40:41,993 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 21:40:41,993 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 21:40:41,994 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 21:40:41,994 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 21:40:41,994 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 21:40:41,994 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 21:40:41,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 21:40:41,995 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 21:40:41,995 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 21:40:41,996 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 21:40:41,996 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-02 21:40:41,996 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-02 21:40:41,996 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 21:40:41,997 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 21:40:41,997 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-02 21:40:41,997 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43772e76f997756c105b42bdc7ff6dcb71aa103f [2020-12-02 21:40:42,392 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 21:40:42,444 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 21:40:42,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 21:40:42,450 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 21:40:42,452 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 21:40:42,452 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/hard-u_unwindbound50.c [2020-12-02 21:40:42,535 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/992061f56/ed6627b6b6dd4c31ae25a961c49a7daa/FLAGcf06ed924 [2020-12-02 21:40:43,214 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 21:40:43,214 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-u_unwindbound50.c [2020-12-02 21:40:43,222 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/992061f56/ed6627b6b6dd4c31ae25a961c49a7daa/FLAGcf06ed924 [2020-12-02 21:40:43,578 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/992061f56/ed6627b6b6dd4c31ae25a961c49a7daa [2020-12-02 21:40:43,581 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 21:40:43,583 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 21:40:43,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 21:40:43,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 21:40:43,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 21:40:43,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:40:43" (1/1) ... [2020-12-02 21:40:43,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16295a50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:40:43, skipping insertion in model container [2020-12-02 21:40:43,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:40:43" (1/1) ... [2020-12-02 21:40:43,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 21:40:43,685 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 21:40:43,851 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-u_unwindbound50.c[537,550] [2020-12-02 21:40:43,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 21:40:43,893 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 21:40:43,914 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-u_unwindbound50.c[537,550] [2020-12-02 21:40:43,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 21:40:43,949 INFO L208 MainTranslator]: Completed translation [2020-12-02 21:40:43,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:40:43 WrapperNode [2020-12-02 21:40:43,950 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 21:40:43,952 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 21:40:43,952 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 21:40:43,952 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 21:40:43,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:40:43" (1/1) ... [2020-12-02 21:40:43,970 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:40:43" (1/1) ... [2020-12-02 21:40:44,000 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 21:40:44,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 21:40:44,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 21:40:44,001 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 21:40:44,010 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:40:43" (1/1) ... [2020-12-02 21:40:44,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:40:43" (1/1) ... [2020-12-02 21:40:44,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:40:43" (1/1) ... [2020-12-02 21:40:44,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:40:43" (1/1) ... [2020-12-02 21:40:44,020 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:40:43" (1/1) ... [2020-12-02 21:40:44,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:40:43" (1/1) ... [2020-12-02 21:40:44,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:40:43" (1/1) ... [2020-12-02 21:40:44,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 21:40:44,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 21:40:44,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 21:40:44,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 21:40:44,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:40:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 21:40:44,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-02 21:40:44,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 21:40:44,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 21:40:44,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 21:40:44,617 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 21:40:44,617 INFO L298 CfgBuilder]: Removed 22 assume(true) statements. [2020-12-02 21:40:44,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:40:44 BoogieIcfgContainer [2020-12-02 21:40:44,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 21:40:44,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 21:40:44,622 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 21:40:44,626 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 21:40:44,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 09:40:43" (1/3) ... [2020-12-02 21:40:44,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23982ce3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 09:40:44, skipping insertion in model container [2020-12-02 21:40:44,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:40:43" (2/3) ... [2020-12-02 21:40:44,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23982ce3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 09:40:44, skipping insertion in model container [2020-12-02 21:40:44,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:40:44" (3/3) ... [2020-12-02 21:40:44,631 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-u_unwindbound50.c [2020-12-02 21:40:44,653 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 21:40:44,663 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-02 21:40:44,691 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-02 21:40:44,748 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 21:40:44,750 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 21:40:44,750 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 21:40:44,750 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 21:40:44,750 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 21:40:44,751 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 21:40:44,751 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 21:40:44,751 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 21:40:44,773 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-12-02 21:40:44,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 21:40:44,780 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:40:44,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:40:44,783 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:40:44,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:40:44,793 INFO L82 PathProgramCache]: Analyzing trace with hash 119446382, now seen corresponding path program 1 times [2020-12-02 21:40:44,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 21:40:44,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [537622768] [2020-12-02 21:40:44,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-02 21:40:44,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:40:44,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-02 21:40:44,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:40:45,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:40:45,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 21:40:45,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:40:45,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [537622768] [2020-12-02 21:40:45,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:40:45,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-02 21:40:45,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430217175] [2020-12-02 21:40:45,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 21:40:45,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 21:40:45,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 21:40:45,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 21:40:45,040 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-12-02 21:40:45,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:40:45,060 INFO L93 Difference]: Finished difference Result 79 states and 106 transitions. [2020-12-02 21:40:45,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 21:40:45,061 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-02 21:40:45,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:40:45,071 INFO L225 Difference]: With dead ends: 79 [2020-12-02 21:40:45,072 INFO L226 Difference]: Without dead ends: 37 [2020-12-02 21:40:45,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 21:40:45,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-02 21:40:45,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-02 21:40:45,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-02 21:40:45,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-12-02 21:40:45,113 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 8 [2020-12-02 21:40:45,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:40:45,114 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-12-02 21:40:45,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 21:40:45,114 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-12-02 21:40:45,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 21:40:45,115 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:40:45,115 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:40:45,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-02 21:40:45,333 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:40:45,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:40:45,335 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2020-12-02 21:40:45,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 21:40:45,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [227906658] [2020-12-02 21:40:45,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-02 21:40:45,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:40:45,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-02 21:40:45,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:40:45,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:40:45,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 21:40:45,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:40:45,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [227906658] [2020-12-02 21:40:45,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:40:45,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2020-12-02 21:40:45,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163511787] [2020-12-02 21:40:45,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 21:40:45,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 21:40:45,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 21:40:45,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 21:40:45,466 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 5 states. [2020-12-02 21:40:45,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:40:45,664 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2020-12-02 21:40:45,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 21:40:45,665 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-02 21:40:45,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:40:45,666 INFO L225 Difference]: With dead ends: 61 [2020-12-02 21:40:45,666 INFO L226 Difference]: Without dead ends: 59 [2020-12-02 21:40:45,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-02 21:40:45,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-02 21:40:45,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 35. [2020-12-02 21:40:45,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-02 21:40:45,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-12-02 21:40:45,690 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2020-12-02 21:40:45,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:40:45,691 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-12-02 21:40:45,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 21:40:45,691 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-12-02 21:40:45,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 21:40:45,692 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:40:45,692 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:40:45,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-02 21:40:45,905 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:40:45,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:40:45,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1986071569, now seen corresponding path program 1 times [2020-12-02 21:40:45,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 21:40:45,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [847520393] [2020-12-02 21:40:45,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-02 21:40:45,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:40:45,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-02 21:40:45,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:40:46,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:40:46,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 21:40:46,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:40:46,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [847520393] [2020-12-02 21:40:46,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:40:46,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-02 21:40:46,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780493460] [2020-12-02 21:40:46,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 21:40:46,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 21:40:46,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 21:40:46,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-02 21:40:46,043 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-12-02 21:40:46,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:40:46,091 INFO L93 Difference]: Finished difference Result 69 states and 78 transitions. [2020-12-02 21:40:46,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 21:40:46,092 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-02 21:40:46,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:40:46,093 INFO L225 Difference]: With dead ends: 69 [2020-12-02 21:40:46,093 INFO L226 Difference]: Without dead ends: 50 [2020-12-02 21:40:46,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-02 21:40:46,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-02 21:40:46,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2020-12-02 21:40:46,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-02 21:40:46,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2020-12-02 21:40:46,105 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 10 [2020-12-02 21:40:46,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:40:46,106 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2020-12-02 21:40:46,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 21:40:46,106 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2020-12-02 21:40:46,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 21:40:46,107 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:40:46,107 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:40:46,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-02 21:40:46,322 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:40:46,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:40:46,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1985334737, now seen corresponding path program 1 times [2020-12-02 21:40:46,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 21:40:46,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1365991434] [2020-12-02 21:40:46,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-02 21:40:46,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:40:46,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-02 21:40:46,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:40:46,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:40:46,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 21:40:46,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:40:46,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1365991434] [2020-12-02 21:40:46,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:40:46,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2020-12-02 21:40:46,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571292215] [2020-12-02 21:40:46,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 21:40:46,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 21:40:46,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 21:40:46,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 21:40:46,417 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 5 states. [2020-12-02 21:40:46,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:40:46,619 INFO L93 Difference]: Finished difference Result 64 states and 73 transitions. [2020-12-02 21:40:46,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 21:40:46,620 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-02 21:40:46,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:40:46,621 INFO L225 Difference]: With dead ends: 64 [2020-12-02 21:40:46,621 INFO L226 Difference]: Without dead ends: 62 [2020-12-02 21:40:46,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-02 21:40:46,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-12-02 21:40:46,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 43. [2020-12-02 21:40:46,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-02 21:40:46,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2020-12-02 21:40:46,632 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 10 [2020-12-02 21:40:46,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:40:46,632 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2020-12-02 21:40:46,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 21:40:46,632 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2020-12-02 21:40:46,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 21:40:46,633 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:40:46,633 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:40:46,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-02 21:40:46,850 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:40:46,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:40:46,851 INFO L82 PathProgramCache]: Analyzing trace with hash -941046702, now seen corresponding path program 1 times [2020-12-02 21:40:46,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 21:40:46,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [489235183] [2020-12-02 21:40:46,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-12-02 21:40:46,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:40:46,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-02 21:40:46,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:40:46,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:40:46,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 21:40:47,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:40:47,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [489235183] [2020-12-02 21:40:47,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:40:47,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-12-02 21:40:47,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143568687] [2020-12-02 21:40:47,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 21:40:47,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 21:40:47,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 21:40:47,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-02 21:40:47,097 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 6 states. [2020-12-02 21:40:49,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:40:49,856 INFO L93 Difference]: Finished difference Result 106 states and 123 transitions. [2020-12-02 21:40:49,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-02 21:40:49,858 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-02 21:40:49,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:40:49,859 INFO L225 Difference]: With dead ends: 106 [2020-12-02 21:40:49,859 INFO L226 Difference]: Without dead ends: 83 [2020-12-02 21:40:49,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-12-02 21:40:49,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-02 21:40:49,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 63. [2020-12-02 21:40:49,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-02 21:40:49,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 74 transitions. [2020-12-02 21:40:49,874 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 74 transitions. Word has length 12 [2020-12-02 21:40:49,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:40:49,874 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 74 transitions. [2020-12-02 21:40:49,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 21:40:49,875 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 74 transitions. [2020-12-02 21:40:49,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-02 21:40:49,875 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:40:49,875 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:40:50,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-02 21:40:50,087 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 21:40:50,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:40:50,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1803611644, now seen corresponding path program 1 times [2020-12-02 21:40:50,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 21:40:50,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1281120831] [2020-12-02 21:40:50,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-12-02 21:40:50,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:40:50,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-02 21:40:50,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:40:50,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:40:50,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 21:40:50,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:40:50,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1281120831] [2020-12-02 21:40:50,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:40:50,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 2] imperfect sequences [] total 5 [2020-12-02 21:40:50,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530717646] [2020-12-02 21:40:50,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 21:40:50,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 21:40:50,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 21:40:50,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 21:40:50,262 INFO L87 Difference]: Start difference. First operand 63 states and 74 transitions. Second operand 5 states. [2020-12-02 21:40:50,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:40:50,264 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-12-02 21:40:50,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 21:40:50,264 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-12-02 21:40:50,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:40:50,265 INFO L225 Difference]: With dead ends: 63 [2020-12-02 21:40:50,265 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 21:40:50,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 21:40:50,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 21:40:50,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 21:40:50,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 21:40:50,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 21:40:50,267 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-12-02 21:40:50,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:40:50,267 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 21:40:50,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 21:40:50,268 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 21:40:50,268 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 21:40:50,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-02 21:40:50,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-02 21:40:50,557 INFO L258 CegarLoopResult]: At program point L35-3(lines 35 43) the Hoare annotation is: false [2020-12-02 21:40:50,558 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-02 21:40:50,558 INFO L262 CegarLoopResult]: For program point L11(lines 11 13) no Hoare annotation was computed. [2020-12-02 21:40:50,558 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-02 21:40:50,558 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-02 21:40:50,559 INFO L265 CegarLoopResult]: At program point L61(lines 23 62) the Hoare annotation is: true [2020-12-02 21:40:50,559 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-02 21:40:50,559 INFO L262 CegarLoopResult]: For program point L53(lines 53 56) no Hoare annotation was computed. [2020-12-02 21:40:50,559 INFO L262 CegarLoopResult]: For program point L53-2(lines 23 62) no Hoare annotation was computed. [2020-12-02 21:40:50,559 INFO L262 CegarLoopResult]: For program point L45(lines 45 57) no Hoare annotation was computed. [2020-12-02 21:40:50,560 INFO L262 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-12-02 21:40:50,560 INFO L262 CegarLoopResult]: For program point L45-2(lines 45 57) no Hoare annotation was computed. [2020-12-02 21:40:50,560 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-02 21:40:50,560 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-02 21:40:50,560 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-02 21:40:50,561 INFO L262 CegarLoopResult]: For program point L15(lines 15 18) no Hoare annotation was computed. [2020-12-02 21:40:50,561 INFO L258 CegarLoopResult]: At program point L15-2(lines 14 20) the Hoare annotation is: false [2020-12-02 21:40:50,561 INFO L262 CegarLoopResult]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2020-12-02 21:40:50,561 INFO L258 CegarLoopResult]: At program point L15-5(lines 14 20) the Hoare annotation is: false [2020-12-02 21:40:50,561 INFO L262 CegarLoopResult]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2020-12-02 21:40:50,562 INFO L258 CegarLoopResult]: At program point L15-8(line 39) the Hoare annotation is: false [2020-12-02 21:40:50,562 INFO L262 CegarLoopResult]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2020-12-02 21:40:50,562 INFO L258 CegarLoopResult]: At program point L15-11(lines 14 20) the Hoare annotation is: false [2020-12-02 21:40:50,562 INFO L262 CegarLoopResult]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2020-12-02 21:40:50,562 INFO L258 CegarLoopResult]: At program point L15-14(line 49) the Hoare annotation is: false [2020-12-02 21:40:50,563 INFO L262 CegarLoopResult]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2020-12-02 21:40:50,563 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-02 21:40:50,563 INFO L258 CegarLoopResult]: At program point L15-17(lines 14 20) the Hoare annotation is: (and (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~B~0) (= (_ bv1 32) ULTIMATE.start_main_~p~0)) [2020-12-02 21:40:50,563 INFO L262 CegarLoopResult]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2020-12-02 21:40:50,563 INFO L265 CegarLoopResult]: At program point L15-20(lines 14 20) the Hoare annotation is: true [2020-12-02 21:40:50,564 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-02 21:40:50,564 INFO L262 CegarLoopResult]: For program point L16(lines 16 17) no Hoare annotation was computed. [2020-12-02 21:40:50,564 INFO L262 CegarLoopResult]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2020-12-02 21:40:50,564 INFO L262 CegarLoopResult]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2020-12-02 21:40:50,564 INFO L262 CegarLoopResult]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2020-12-02 21:40:50,565 INFO L262 CegarLoopResult]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2020-12-02 21:40:50,565 INFO L262 CegarLoopResult]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2020-12-02 21:40:50,565 INFO L262 CegarLoopResult]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2020-12-02 21:40:50,565 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-02 21:40:50,565 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-02 21:40:50,565 INFO L262 CegarLoopResult]: For program point L35-1(lines 35 43) no Hoare annotation was computed. [2020-12-02 21:40:50,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 09:40:50 BoogieIcfgContainer [2020-12-02 21:40:50,583 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 21:40:50,584 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 21:40:50,584 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 21:40:50,584 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 21:40:50,585 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:40:44" (3/4) ... [2020-12-02 21:40:50,589 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 21:40:50,602 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-12-02 21:40:50,602 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-02 21:40:50,603 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 21:40:50,603 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 21:40:50,663 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 21:40:50,664 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 21:40:50,666 INFO L168 Benchmark]: Toolchain (without parser) took 7082.13 ms. Allocated memory was 44.0 MB in the beginning and 67.1 MB in the end (delta: 23.1 MB). Free memory was 22.1 MB in the beginning and 36.2 MB in the end (delta: -14.1 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.1 GB. [2020-12-02 21:40:50,667 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 35.7 MB. Free memory was 18.5 MB in the beginning and 18.4 MB in the end (delta: 31.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 21:40:50,667 INFO L168 Benchmark]: CACSL2BoogieTranslator took 366.26 ms. Allocated memory is still 44.0 MB. Free memory was 21.9 MB in the beginning and 20.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-12-02 21:40:50,668 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.17 ms. Allocated memory is still 44.0 MB. Free memory was 20.8 MB in the beginning and 29.0 MB in the end (delta: -8.2 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. [2020-12-02 21:40:50,669 INFO L168 Benchmark]: Boogie Preprocessor took 30.44 ms. Allocated memory is still 44.0 MB. Free memory was 29.0 MB in the beginning and 27.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 21:40:50,670 INFO L168 Benchmark]: RCFGBuilder took 588.07 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 27.7 MB in the beginning and 30.3 MB in the end (delta: -2.6 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. [2020-12-02 21:40:50,670 INFO L168 Benchmark]: TraceAbstraction took 5961.07 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 29.8 MB in the beginning and 39.3 MB in the end (delta: -9.5 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-12-02 21:40:50,671 INFO L168 Benchmark]: Witness Printer took 79.98 ms. Allocated memory is still 67.1 MB. Free memory was 39.3 MB in the beginning and 36.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 21:40:50,675 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 35.7 MB. Free memory was 18.5 MB in the beginning and 18.4 MB in the end (delta: 31.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 366.26 ms. Allocated memory is still 44.0 MB. Free memory was 21.9 MB in the beginning and 20.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.17 ms. Allocated memory is still 44.0 MB. Free memory was 20.8 MB in the beginning and 29.0 MB in the end (delta: -8.2 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.44 ms. Allocated memory is still 44.0 MB. Free memory was 29.0 MB in the beginning and 27.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 588.07 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 27.7 MB in the beginning and 30.3 MB in the end (delta: -2.6 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5961.07 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 29.8 MB in the beginning and 39.3 MB in the end (delta: -9.5 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * Witness Printer took 79.98 ms. Allocated memory is still 67.1 MB. Free memory was 39.3 MB in the beginning and 36.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (!(cond == 0bv32) && d == B) && 1bv32 == p - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 178 SDtfs, 176 SDslu, 231 SDs, 0 SdLazy, 147 SolverSat, 66 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 125 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 68 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 12 NumberOfFragments, 19 HoareAnnotationTreeSize, 9 FomulaSimplifications, 40 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 116 ConstructedInterpolants, 0 QuantifiedInterpolants, 3446 SizeOfPredicates, 17 NumberOfNonLiveVariables, 253 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 proved your program to be correct! Received shutdown request...