./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/eqn2f.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8fa2aeaf-5271-47b1-a4df-1f8615f5c605/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8fa2aeaf-5271-47b1-a4df-1f8615f5c605/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8fa2aeaf-5271-47b1-a4df-1f8615f5c605/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8fa2aeaf-5271-47b1-a4df-1f8615f5c605/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/eqn2f.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8fa2aeaf-5271-47b1-a4df-1f8615f5c605/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8fa2aeaf-5271-47b1-a4df-1f8615f5c605/bin/uautomizer --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 d865065a7c8613a66332b84e9d5b1d95cce65492 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:18:35,493 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:18:35,495 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:18:35,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:18:35,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:18:35,528 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:18:35,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:18:35,533 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:18:35,535 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:18:35,537 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:18:35,538 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:18:35,539 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:18:35,540 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:18:35,541 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:18:35,543 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:18:35,544 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:18:35,545 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:18:35,547 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:18:35,549 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:18:35,551 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:18:35,553 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:18:35,555 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:18:35,557 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:18:35,558 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:18:35,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:18:35,562 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:18:35,562 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:18:35,563 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:18:35,564 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:18:35,565 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:18:35,565 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:18:35,566 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:18:35,567 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:18:35,568 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:18:35,570 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:18:35,570 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:18:35,571 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:18:35,572 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:18:35,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:18:35,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:18:35,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:18:35,579 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8fa2aeaf-5271-47b1-a4df-1f8615f5c605/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:18:35,606 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:18:35,606 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:18:35,607 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:18:35,608 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:18:35,608 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:18:35,609 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:18:35,609 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:18:35,610 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:18:35,610 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:18:35,610 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:18:35,611 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:18:35,611 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:18:35,612 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:18:35,612 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:18:35,612 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:18:35,613 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:18:35,613 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:18:35,613 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:18:35,614 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:18:35,614 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:18:35,615 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:18:35,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:18:35,615 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:18:35,616 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:18:35,616 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:18:35,617 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:18:35,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:18:35,617 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:18:35,618 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:18:35,618 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:/tmp/vcloud-vcloud-master/worker/run_dir_8fa2aeaf-5271-47b1-a4df-1f8615f5c605/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8fa2aeaf-5271-47b1-a4df-1f8615f5c605/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d865065a7c8613a66332b84e9d5b1d95cce65492 [2020-11-30 00:18:35,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:18:35,925 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:18:35,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:18:35,929 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:18:35,931 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:18:35,932 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8fa2aeaf-5271-47b1-a4df-1f8615f5c605/bin/uautomizer/../../sv-benchmarks/c/array-fpi/eqn2f.c [2020-11-30 00:18:35,989 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8fa2aeaf-5271-47b1-a4df-1f8615f5c605/bin/uautomizer/data/9d15fa3a0/b0eb87f798444eaeaea9a17a3fcebe70/FLAG5722b28d5 [2020-11-30 00:18:36,401 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:18:36,402 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8fa2aeaf-5271-47b1-a4df-1f8615f5c605/sv-benchmarks/c/array-fpi/eqn2f.c [2020-11-30 00:18:36,408 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8fa2aeaf-5271-47b1-a4df-1f8615f5c605/bin/uautomizer/data/9d15fa3a0/b0eb87f798444eaeaea9a17a3fcebe70/FLAG5722b28d5 [2020-11-30 00:18:36,807 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8fa2aeaf-5271-47b1-a4df-1f8615f5c605/bin/uautomizer/data/9d15fa3a0/b0eb87f798444eaeaea9a17a3fcebe70 [2020-11-30 00:18:36,809 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:18:36,811 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:18:36,812 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:18:36,812 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:18:36,815 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:18:36,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:18:36" (1/1) ... [2020-11-30 00:18:36,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d828d50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:36, skipping insertion in model container [2020-11-30 00:18:36,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:18:36" (1/1) ... [2020-11-30 00:18:36,827 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:18:36,841 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:18:37,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:18:37,028 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:18:37,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:18:37,062 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:18:37,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:37 WrapperNode [2020-11-30 00:18:37,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:18:37,064 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:18:37,064 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:18:37,064 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:18:37,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:37" (1/1) ... [2020-11-30 00:18:37,079 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:37" (1/1) ... [2020-11-30 00:18:37,099 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:18:37,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:18:37,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:18:37,101 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:18:37,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:37" (1/1) ... [2020-11-30 00:18:37,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:37" (1/1) ... [2020-11-30 00:18:37,111 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:37" (1/1) ... [2020-11-30 00:18:37,111 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:37" (1/1) ... [2020-11-30 00:18:37,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:37" (1/1) ... [2020-11-30 00:18:37,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:37" (1/1) ... [2020-11-30 00:18:37,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:37" (1/1) ... [2020-11-30 00:18:37,125 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:18:37,126 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:18:37,126 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:18:37,126 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:18:37,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8fa2aeaf-5271-47b1-a4df-1f8615f5c605/bin/uautomizer/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 [2020-11-30 00:18:37,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:18:37,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:18:37,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 00:18:37,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-30 00:18:37,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:18:37,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:18:37,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 00:18:37,481 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:18:37,482 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-11-30 00:18:37,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:18:37 BoogieIcfgContainer [2020-11-30 00:18:37,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:18:37,485 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:18:37,485 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:18:37,502 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:18:37,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:18:36" (1/3) ... [2020-11-30 00:18:37,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3c15c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:18:37, skipping insertion in model container [2020-11-30 00:18:37,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:37" (2/3) ... [2020-11-30 00:18:37,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3c15c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:18:37, skipping insertion in model container [2020-11-30 00:18:37,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:18:37" (3/3) ... [2020-11-30 00:18:37,505 INFO L111 eAbstractionObserver]: Analyzing ICFG eqn2f.c [2020-11-30 00:18:37,515 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:18:37,534 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:18:37,545 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:18:37,569 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:18:37,570 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:18:37,570 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:18:37,570 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:18:37,570 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:18:37,570 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:18:37,570 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:18:37,571 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:18:37,583 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-11-30 00:18:37,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 00:18:37,588 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:18:37,589 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:18:37,589 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:18:37,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:37,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1828546148, now seen corresponding path program 1 times [2020-11-30 00:18:37,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:18:37,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749778953] [2020-11-30 00:18:37,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:18:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:18:37,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:18:37,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749778953] [2020-11-30 00:18:37,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:18:37,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:18:37,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271314110] [2020-11-30 00:18:37,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:18:37,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:18:37,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:18:37,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:18:37,764 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2020-11-30 00:18:37,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:18:37,777 INFO L93 Difference]: Finished difference Result 39 states and 53 transitions. [2020-11-30 00:18:37,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:18:37,778 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-11-30 00:18:37,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:18:37,785 INFO L225 Difference]: With dead ends: 39 [2020-11-30 00:18:37,786 INFO L226 Difference]: Without dead ends: 17 [2020-11-30 00:18:37,788 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 [2020-11-30 00:18:37,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-30 00:18:37,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-30 00:18:37,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-30 00:18:37,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-11-30 00:18:37,817 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2020-11-30 00:18:37,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:18:37,818 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-11-30 00:18:37,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:18:37,818 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-11-30 00:18:37,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 00:18:37,819 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:18:37,819 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:18:37,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:18:37,819 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:18:37,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:37,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1148487778, now seen corresponding path program 1 times [2020-11-30 00:18:37,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:18:37,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123587674] [2020-11-30 00:18:37,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:18:37,849 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:18:37,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1234048351] [2020-11-30 00:18:37,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8fa2aeaf-5271-47b1-a4df-1f8615f5c605/bin/uautomizer/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 [2020-11-30 00:18:37,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:18:37,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 00:18:37,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:18:38,065 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:18:38,066 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 39 [2020-11-30 00:18:38,067 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:18:38,106 INFO L625 ElimStorePlain]: treesize reduction 16, result has 59.0 percent of original size [2020-11-30 00:18:38,115 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 00:18:38,115 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:27, output treesize:7 [2020-11-30 00:18:38,185 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:18:38,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:18:38,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123587674] [2020-11-30 00:18:38,241 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:18:38,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234048351] [2020-11-30 00:18:38,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:18:38,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 00:18:38,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824566122] [2020-11-30 00:18:38,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:18:38,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:18:38,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:18:38,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:18:38,244 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 5 states. [2020-11-30 00:18:38,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:18:38,375 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2020-11-30 00:18:38,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:18:38,376 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-30 00:18:38,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:18:38,377 INFO L225 Difference]: With dead ends: 34 [2020-11-30 00:18:38,377 INFO L226 Difference]: Without dead ends: 32 [2020-11-30 00:18:38,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:18:38,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-30 00:18:38,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2020-11-30 00:18:38,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-30 00:18:38,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-11-30 00:18:38,384 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2020-11-30 00:18:38,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:18:38,385 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-11-30 00:18:38,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:18:38,385 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-11-30 00:18:38,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 00:18:38,386 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:18:38,386 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:18:38,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-30 00:18:38,599 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:18:38,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:38,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1755224028, now seen corresponding path program 1 times [2020-11-30 00:18:38,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:18:38,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871254035] [2020-11-30 00:18:38,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:18:38,645 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:18:38,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [27613272] [2020-11-30 00:18:38,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8fa2aeaf-5271-47b1-a4df-1f8615f5c605/bin/uautomizer/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 [2020-11-30 00:18:38,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:18:38,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:18:38,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:18:38,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:18:38,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871254035] [2020-11-30 00:18:38,752 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:18:38,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27613272] [2020-11-30 00:18:38,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:18:38,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 00:18:38,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902929528] [2020-11-30 00:18:38,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:18:38,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:18:38,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:18:38,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:18:38,755 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 5 states. [2020-11-30 00:18:38,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:18:38,888 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2020-11-30 00:18:38,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:18:38,889 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-30 00:18:38,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:18:38,890 INFO L225 Difference]: With dead ends: 49 [2020-11-30 00:18:38,890 INFO L226 Difference]: Without dead ends: 40 [2020-11-30 00:18:38,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:18:38,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-30 00:18:38,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 23. [2020-11-30 00:18:38,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-30 00:18:38,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-11-30 00:18:38,896 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 14 [2020-11-30 00:18:38,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:18:38,897 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-11-30 00:18:38,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:18:38,897 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-11-30 00:18:38,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 00:18:38,897 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:18:38,898 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:18:39,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:18:39,098 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:18:39,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:39,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1842440164, now seen corresponding path program 1 times [2020-11-30 00:18:39,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:18:39,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037892041] [2020-11-30 00:18:39,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:18:39,139 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:18:39,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [153286184] [2020-11-30 00:18:39,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8fa2aeaf-5271-47b1-a4df-1f8615f5c605/bin/uautomizer/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 [2020-11-30 00:18:39,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:18:39,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:18:39,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:18:39,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:18:39,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037892041] [2020-11-30 00:18:39,254 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:18:39,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153286184] [2020-11-30 00:18:39,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:18:39,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-30 00:18:39,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409233942] [2020-11-30 00:18:39,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:18:39,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:18:39,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:18:39,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:18:39,256 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 5 states. [2020-11-30 00:18:39,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:18:39,374 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2020-11-30 00:18:39,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:18:39,376 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-30 00:18:39,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:18:39,377 INFO L225 Difference]: With dead ends: 44 [2020-11-30 00:18:39,377 INFO L226 Difference]: Without dead ends: 37 [2020-11-30 00:18:39,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:18:39,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-30 00:18:39,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 24. [2020-11-30 00:18:39,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-30 00:18:39,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-11-30 00:18:39,382 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 14 [2020-11-30 00:18:39,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:18:39,386 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-11-30 00:18:39,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:18:39,387 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-11-30 00:18:39,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 00:18:39,388 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:18:39,388 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:18:39,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:18:39,589 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:18:39,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:39,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1608719470, now seen corresponding path program 1 times [2020-11-30 00:18:39,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:18:39,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679397154] [2020-11-30 00:18:39,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:18:39,608 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:18:39,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1786335749] [2020-11-30 00:18:39,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8fa2aeaf-5271-47b1-a4df-1f8615f5c605/bin/uautomizer/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 [2020-11-30 00:18:39,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:18:39,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 00:18:39,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:18:39,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:18:39,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679397154] [2020-11-30 00:18:39,756 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:18:39,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786335749] [2020-11-30 00:18:39,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:18:39,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 00:18:39,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275260033] [2020-11-30 00:18:39,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:18:39,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:18:39,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:18:39,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:18:39,759 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 6 states. [2020-11-30 00:18:39,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:18:39,885 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2020-11-30 00:18:39,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 00:18:39,888 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-30 00:18:39,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:18:39,889 INFO L225 Difference]: With dead ends: 41 [2020-11-30 00:18:39,889 INFO L226 Difference]: Without dead ends: 27 [2020-11-30 00:18:39,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-11-30 00:18:39,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-30 00:18:39,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2020-11-30 00:18:39,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-30 00:18:39,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-11-30 00:18:39,893 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 16 [2020-11-30 00:18:39,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:18:39,894 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-11-30 00:18:39,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:18:39,894 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-11-30 00:18:39,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 00:18:39,895 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:18:39,895 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:18:40,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:18:40,111 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:18:40,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:40,112 INFO L82 PathProgramCache]: Analyzing trace with hash 586911962, now seen corresponding path program 1 times [2020-11-30 00:18:40,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:18:40,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413295883] [2020-11-30 00:18:40,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:18:40,131 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:18:40,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [908997199] [2020-11-30 00:18:40,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8fa2aeaf-5271-47b1-a4df-1f8615f5c605/bin/uautomizer/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 [2020-11-30 00:18:40,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:18:40,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-30 00:18:40,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:18:40,262 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-11-30 00:18:40,264 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:18:40,272 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:18:40,282 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2020-11-30 00:18:40,282 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-30 00:18:40,291 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:18:40,292 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 00:18:40,292 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:36, output treesize:19 [2020-11-30 00:18:40,367 INFO L350 Elim1Store]: treesize reduction 54, result has 46.0 percent of original size [2020-11-30 00:18:40,368 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 72 [2020-11-30 00:18:40,370 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:18:40,402 INFO L625 ElimStorePlain]: treesize reduction 27, result has 64.5 percent of original size [2020-11-30 00:18:40,404 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:18:40,406 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-30 00:18:40,406 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:45, output treesize:49 [2020-11-30 00:18:40,407 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:18:40,447 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:18:40,480 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:18:40,499 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:18:40,571 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 5, 1] term [2020-11-30 00:18:40,571 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:18:40,601 INFO L441 ElimStorePlain]: Different costs {12=[|v_#memory_int_13|], 20=[v_prenex_3]} [2020-11-30 00:18:40,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-30 00:18:40,620 INFO L350 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2020-11-30 00:18:40,620 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 43 [2020-11-30 00:18:40,621 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:18:40,673 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:18:40,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-30 00:18:40,744 INFO L350 Elim1Store]: treesize reduction 17, result has 60.5 percent of original size [2020-11-30 00:18:40,745 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 85 [2020-11-30 00:18:40,746 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-30 00:18:40,825 INFO L625 ElimStorePlain]: treesize reduction 45, result has 72.6 percent of original size [2020-11-30 00:18:40,834 INFO L545 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-2 vars, End of recursive call: 5 dim-0 vars, and 2 xjuncts. [2020-11-30 00:18:40,834 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:115, output treesize:119 [2020-11-30 00:18:41,091 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 4, 1] term [2020-11-30 00:18:41,092 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:18:41,107 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-30 00:18:41,135 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-30 00:18:41,138 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:18:41,154 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:18:41,158 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-30 00:18:41,170 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-30 00:18:41,267 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:18:41,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413295883] [2020-11-30 00:18:41,268 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:18:41,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908997199] [2020-11-30 00:18:41,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:18:41,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-30 00:18:41,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946899903] [2020-11-30 00:18:41,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 00:18:41,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:18:41,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 00:18:41,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:18:41,270 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 8 states. [2020-11-30 00:18:45,727 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-11-30 00:18:45,925 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-11-30 00:18:48,244 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2020-11-30 00:18:48,917 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 69 [2020-11-30 00:18:49,374 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-11-30 00:18:49,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:18:49,456 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2020-11-30 00:18:49,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 00:18:49,461 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2020-11-30 00:18:49,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:18:49,462 INFO L225 Difference]: With dead ends: 44 [2020-11-30 00:18:49,462 INFO L226 Difference]: Without dead ends: 42 [2020-11-30 00:18:49,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=46, Invalid=109, Unknown=1, NotChecked=0, Total=156 [2020-11-30 00:18:49,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-11-30 00:18:49,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 28. [2020-11-30 00:18:49,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-30 00:18:49,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-11-30 00:18:49,490 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-11-30 00:18:49,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:18:49,490 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-11-30 00:18:49,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 00:18:49,490 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-11-30 00:18:49,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 00:18:49,491 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:18:49,491 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:18:49,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-30 00:18:49,691 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:18:49,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:49,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1267903976, now seen corresponding path program 2 times [2020-11-30 00:18:49,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:18:49,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423311396] [2020-11-30 00:18:49,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:18:49,717 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:18:49,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [643208864] [2020-11-30 00:18:49,728 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8fa2aeaf-5271-47b1-a4df-1f8615f5c605/bin/uautomizer/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 [2020-11-30 00:18:49,786 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:18:49,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:18:49,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 00:18:49,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:18:49,842 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:18:49,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423311396] [2020-11-30 00:18:49,843 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:18:49,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643208864] [2020-11-30 00:18:49,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:18:49,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-30 00:18:49,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914779890] [2020-11-30 00:18:49,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 00:18:49,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:18:49,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 00:18:49,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:18:49,844 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-11-30 00:18:50,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:18:50,017 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2020-11-30 00:18:50,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 00:18:50,018 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-11-30 00:18:50,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:18:50,018 INFO L225 Difference]: With dead ends: 61 [2020-11-30 00:18:50,019 INFO L226 Difference]: Without dead ends: 52 [2020-11-30 00:18:50,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-30 00:18:50,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-30 00:18:50,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 28. [2020-11-30 00:18:50,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-30 00:18:50,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-11-30 00:18:50,025 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 18 [2020-11-30 00:18:50,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:18:50,025 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-11-30 00:18:50,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 00:18:50,025 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-11-30 00:18:50,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 00:18:50,025 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:18:50,025 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:18:50,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:18:50,226 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:18:50,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:50,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1174519208, now seen corresponding path program 3 times [2020-11-30 00:18:50,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:18:50,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733175336] [2020-11-30 00:18:50,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:18:50,254 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:18:50,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1344364039] [2020-11-30 00:18:50,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8fa2aeaf-5271-47b1-a4df-1f8615f5c605/bin/uautomizer/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 [2020-11-30 00:18:50,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-30 00:18:50,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:18:50,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 00:18:50,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:18:50,382 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:18:50,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733175336] [2020-11-30 00:18:50,383 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:18:50,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344364039] [2020-11-30 00:18:50,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:18:50,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-30 00:18:50,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015733604] [2020-11-30 00:18:50,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 00:18:50,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:18:50,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 00:18:50,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:18:50,385 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 7 states. [2020-11-30 00:18:50,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:18:50,585 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2020-11-30 00:18:50,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 00:18:50,587 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-11-30 00:18:50,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:18:50,587 INFO L225 Difference]: With dead ends: 56 [2020-11-30 00:18:50,588 INFO L226 Difference]: Without dead ends: 49 [2020-11-30 00:18:50,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-11-30 00:18:50,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-30 00:18:50,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30. [2020-11-30 00:18:50,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-30 00:18:50,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-11-30 00:18:50,594 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 18 [2020-11-30 00:18:50,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:18:50,594 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-11-30 00:18:50,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 00:18:50,594 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-11-30 00:18:50,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-30 00:18:50,595 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:18:50,595 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:18:50,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:18:50,815 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:18:50,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:50,815 INFO L82 PathProgramCache]: Analyzing trace with hash 858128078, now seen corresponding path program 1 times [2020-11-30 00:18:50,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:18:50,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101361208] [2020-11-30 00:18:50,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:18:50,836 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:18:50,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1585636180] [2020-11-30 00:18:50,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8fa2aeaf-5271-47b1-a4df-1f8615f5c605/bin/uautomizer/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 [2020-11-30 00:18:50,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:18:50,924 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:18:50,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:18:50,946 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:18:51,002 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:18:51,002 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:18:51,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-11-30 00:18:51,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:18:51 BoogieIcfgContainer [2020-11-30 00:18:51,263 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:18:51,264 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:18:51,264 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:18:51,264 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:18:51,265 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:18:37" (3/4) ... [2020-11-30 00:18:51,267 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 00:18:51,315 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8fa2aeaf-5271-47b1-a4df-1f8615f5c605/bin/uautomizer/witness.graphml [2020-11-30 00:18:51,315 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:18:51,316 INFO L168 Benchmark]: Toolchain (without parser) took 14504.76 ms. Allocated memory was 88.1 MB in the beginning and 132.1 MB in the end (delta: 44.0 MB). Free memory was 52.8 MB in the beginning and 90.2 MB in the end (delta: -37.4 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2020-11-30 00:18:51,317 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 88.1 MB. Free memory is still 69.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:18:51,317 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.04 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 52.6 MB in the beginning and 81.3 MB in the end (delta: -28.8 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. [2020-11-30 00:18:51,318 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.60 ms. Allocated memory is still 107.0 MB. Free memory was 81.3 MB in the beginning and 79.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:18:51,319 INFO L168 Benchmark]: Boogie Preprocessor took 24.65 ms. Allocated memory is still 107.0 MB. Free memory was 79.6 MB in the beginning and 78.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:18:51,319 INFO L168 Benchmark]: RCFGBuilder took 357.50 ms. Allocated memory is still 107.0 MB. Free memory was 78.4 MB in the beginning and 63.9 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-30 00:18:51,320 INFO L168 Benchmark]: TraceAbstraction took 13778.47 ms. Allocated memory was 107.0 MB in the beginning and 132.1 MB in the end (delta: 25.2 MB). Free memory was 63.5 MB in the beginning and 93.4 MB in the end (delta: -29.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:18:51,320 INFO L168 Benchmark]: Witness Printer took 51.27 ms. Allocated memory is still 132.1 MB. Free memory was 93.4 MB in the beginning and 90.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:18:51,323 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 88.1 MB. Free memory is still 69.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 251.04 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 52.6 MB in the beginning and 81.3 MB in the end (delta: -28.8 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.60 ms. Allocated memory is still 107.0 MB. Free memory was 81.3 MB in the beginning and 79.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.65 ms. Allocated memory is still 107.0 MB. Free memory was 79.6 MB in the beginning and 78.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 357.50 ms. Allocated memory is still 107.0 MB. Free memory was 78.4 MB in the beginning and 63.9 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13778.47 ms. Allocated memory was 107.0 MB in the beginning and 132.1 MB in the end (delta: 25.2 MB). Free memory was 63.5 MB in the beginning and 93.4 MB in the end (delta: -29.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 51.27 ms. Allocated memory is still 132.1 MB. Free memory was 93.4 MB in the beginning and 90.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; VAL [N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L13] COND FALSE !(!cond) VAL [N=2] [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L31] a[0] = 8 [L32] b[0] = 1 [L34] i=1 VAL [N=2] [L34] COND TRUE i