./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.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_df0743e2-f832-423f-9069-a9db480b1437/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_df0743e2-f832-423f-9069-a9db480b1437/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_df0743e2-f832-423f-9069-a9db480b1437/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_df0743e2-f832-423f-9069-a9db480b1437/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c -s /tmp/vcloud-vcloud-master/worker/run_dir_df0743e2-f832-423f-9069-a9db480b1437/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_df0743e2-f832-423f-9069-a9db480b1437/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 70232273db64c4ed6ec49f2ee7a39af483aa4593 .................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_df0743e2-f832-423f-9069-a9db480b1437/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_df0743e2-f832-423f-9069-a9db480b1437/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_df0743e2-f832-423f-9069-a9db480b1437/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_df0743e2-f832-423f-9069-a9db480b1437/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c -s /tmp/vcloud-vcloud-master/worker/run_dir_df0743e2-f832-423f-9069-a9db480b1437/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_df0743e2-f832-423f-9069-a9db480b1437/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 70232273db64c4ed6ec49f2ee7a39af483aa4593 ................................................................................................................................................................................................................................................................................................................................................................................................. 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 [2020-11-29 22:51:45,324 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:51:45,327 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:51:45,361 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:51:45,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:51:45,363 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:51:45,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:51:45,368 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:51:45,370 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:51:45,372 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:51:45,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:51:45,375 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:51:45,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:51:45,377 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:51:45,379 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:51:45,381 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:51:45,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:51:45,383 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:51:45,386 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:51:45,388 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:51:45,391 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:51:45,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:51:45,394 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:51:45,395 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:51:45,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:51:45,412 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:51:45,412 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:51:45,414 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:51:45,414 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:51:45,415 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:51:45,416 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:51:45,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:51:45,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:51:45,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:51:45,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:51:45,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:51:45,421 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:51:45,421 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:51:45,422 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:51:45,423 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:51:45,424 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:51:45,429 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_df0743e2-f832-423f-9069-a9db480b1437/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 22:51:45,471 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:51:45,471 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:51:45,485 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:51:45,485 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:51:45,485 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:51:45,485 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:51:45,486 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 22:51:45,486 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 22:51:45,486 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 22:51:45,486 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:51:45,486 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 22:51:45,486 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 22:51:45,487 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 22:51:45,487 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 22:51:45,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 22:51:45,487 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:51:45,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 22:51:45,488 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:51:45,488 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:51:45,494 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 22:51:45,494 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 22:51:45,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 22:51:45,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:51:45,495 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 22:51:45,495 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 22:51:45,495 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 22:51:45,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 22:51:45,496 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 22:51:45,496 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:51:45,496 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_df0743e2-f832-423f-9069-a9db480b1437/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_df0743e2-f832-423f-9069-a9db480b1437/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 70232273db64c4ed6ec49f2ee7a39af483aa4593 [2020-11-29 22:51:45,775 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:51:45,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:51:45,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:51:45,814 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:51:45,814 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:51:45,815 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_df0743e2-f832-423f-9069-a9db480b1437/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c [2020-11-29 22:51:45,903 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_df0743e2-f832-423f-9069-a9db480b1437/bin/uautomizer/data/3a2d33f6e/7876fccef881426ab7e7b2378ff30fc9/FLAGde20b9d9c [2020-11-29 22:51:46,361 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:51:46,362 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_df0743e2-f832-423f-9069-a9db480b1437/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c [2020-11-29 22:51:46,374 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_df0743e2-f832-423f-9069-a9db480b1437/bin/uautomizer/data/3a2d33f6e/7876fccef881426ab7e7b2378ff30fc9/FLAGde20b9d9c [2020-11-29 22:51:46,742 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_df0743e2-f832-423f-9069-a9db480b1437/bin/uautomizer/data/3a2d33f6e/7876fccef881426ab7e7b2378ff30fc9 [2020-11-29 22:51:46,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:51:46,747 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 22:51:46,748 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:51:46,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:51:46,752 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:51:46,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:51:46" (1/1) ... [2020-11-29 22:51:46,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fdf7ec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:46, skipping insertion in model container [2020-11-29 22:51:46,755 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:51:46" (1/1) ... [2020-11-29 22:51:46,762 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:51:46,810 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:51:46,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:51:46,987 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:51:47,029 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:51:47,044 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:51:47,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:47 WrapperNode [2020-11-29 22:51:47,045 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:51:47,046 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 22:51:47,047 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 22:51:47,047 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 22:51:47,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:47" (1/1) ... [2020-11-29 22:51:47,062 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:47" (1/1) ... [2020-11-29 22:51:47,085 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 22:51:47,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:51:47,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:51:47,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:51:47,093 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:47" (1/1) ... [2020-11-29 22:51:47,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:47" (1/1) ... [2020-11-29 22:51:47,095 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:47" (1/1) ... [2020-11-29 22:51:47,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:47" (1/1) ... [2020-11-29 22:51:47,114 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:47" (1/1) ... [2020-11-29 22:51:47,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:47" (1/1) ... [2020-11-29 22:51:47,120 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:47" (1/1) ... [2020-11-29 22:51:47,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:51:47,126 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:51:47,126 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:51:47,127 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:51:47,128 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df0743e2-f832-423f-9069-a9db480b1437/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 [2020-11-29 22:51:47,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 22:51:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 22:51:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:51:47,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:51:47,619 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:51:47,620 INFO L298 CfgBuilder]: Removed 31 assume(true) statements. [2020-11-29 22:51:47,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:51:47 BoogieIcfgContainer [2020-11-29 22:51:47,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:51:47,623 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 22:51:47,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 22:51:47,627 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 22:51:47,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 10:51:46" (1/3) ... [2020-11-29 22:51:47,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76219fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:51:47, skipping insertion in model container [2020-11-29 22:51:47,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:47" (2/3) ... [2020-11-29 22:51:47,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76219fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:51:47, skipping insertion in model container [2020-11-29 22:51:47,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:51:47" (3/3) ... [2020-11-29 22:51:47,630 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_valuebound20.c [2020-11-29 22:51:47,657 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 22:51:47,661 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-29 22:51:47,674 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-29 22:51:47,698 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 22:51:47,699 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 22:51:47,699 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 22:51:47,699 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:51:47,699 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:51:47,699 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 22:51:47,699 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:51:47,700 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 22:51:47,714 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-29 22:51:47,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 22:51:47,719 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:51:47,719 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:51:47,720 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:51:47,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:51:47,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2020-11-29 22:51:47,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:51:47,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782963174] [2020-11-29 22:51:47,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:51:47,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:51:47,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:51:47,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782963174] [2020-11-29 22:51:47,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:51:47,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 22:51:47,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044687987] [2020-11-29 22:51:47,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 22:51:47,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:51:47,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 22:51:47,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 22:51:47,888 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-11-29 22:51:47,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:51:47,908 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2020-11-29 22:51:47,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 22:51:47,909 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-29 22:51:47,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:51:47,919 INFO L225 Difference]: With dead ends: 63 [2020-11-29 22:51:47,919 INFO L226 Difference]: Without dead ends: 29 [2020-11-29 22:51:47,923 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 [2020-11-29 22:51:47,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-29 22:51:47,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-29 22:51:47,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-29 22:51:47,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-11-29 22:51:47,961 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2020-11-29 22:51:47,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:51:47,961 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-11-29 22:51:47,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 22:51:47,962 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-11-29 22:51:47,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 22:51:47,962 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:51:47,963 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:51:47,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 22:51:47,963 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:51:47,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:51:47,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2020-11-29 22:51:47,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:51:47,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732337488] [2020-11-29 22:51:47,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:51:47,985 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 22:51:47,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1795391093] [2020-11-29 22:51:47,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df0743e2-f832-423f-9069-a9db480b1437/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 [2020-11-29 22:51:48,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:51:48,044 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:51:48,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:51:48,058 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:51:48,079 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:51:48,079 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 22:51:48,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-29 22:51:48,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 10:51:48 BoogieIcfgContainer [2020-11-29 22:51:48,330 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 22:51:48,331 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:51:48,331 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:51:48,331 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:51:48,332 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:51:47" (3/4) ... [2020-11-29 22:51:48,334 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 22:51:48,334 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:51:48,336 INFO L168 Benchmark]: Toolchain (without parser) took 1588.44 ms. Allocated memory is still 88.1 MB. Free memory was 64.1 MB in the beginning and 64.9 MB in the end (delta: -770.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:51:48,337 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 73.4 MB. Free memory was 48.7 MB in the beginning and 48.7 MB in the end (delta: 41.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:51:48,338 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.39 ms. Allocated memory is still 88.1 MB. Free memory was 64.0 MB in the beginning and 58.8 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 22:51:48,339 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.21 ms. Allocated memory is still 88.1 MB. Free memory was 58.8 MB in the beginning and 57.1 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:51:48,339 INFO L168 Benchmark]: Boogie Preprocessor took 39.22 ms. Allocated memory is still 88.1 MB. Free memory was 57.1 MB in the beginning and 55.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:51:48,340 INFO L168 Benchmark]: RCFGBuilder took 495.66 ms. Allocated memory is still 88.1 MB. Free memory was 55.9 MB in the beginning and 62.9 MB in the end (delta: -7.1 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:51:48,341 INFO L168 Benchmark]: TraceAbstraction took 707.07 ms. Allocated memory is still 88.1 MB. Free memory was 62.6 MB in the beginning and 65.3 MB in the end (delta: -2.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 16.1 GB. [2020-11-29 22:51:48,341 INFO L168 Benchmark]: Witness Printer took 3.37 ms. Allocated memory is still 88.1 MB. Free memory was 65.3 MB in the beginning and 64.9 MB in the end (delta: 397.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:51:48,345 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 73.4 MB. Free memory was 48.7 MB in the beginning and 48.7 MB in the end (delta: 41.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 297.39 ms. Allocated memory is still 88.1 MB. Free memory was 64.0 MB in the beginning and 58.8 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.21 ms. Allocated memory is still 88.1 MB. Free memory was 58.8 MB in the beginning and 57.1 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.22 ms. Allocated memory is still 88.1 MB. Free memory was 57.1 MB in the beginning and 55.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 495.66 ms. Allocated memory is still 88.1 MB. Free memory was 55.9 MB in the beginning and 62.9 MB in the end (delta: -7.1 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 707.07 ms. Allocated memory is still 88.1 MB. Free memory was 62.6 MB in the beginning and 65.3 MB in the end (delta: -2.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 16.1 GB. * Witness Printer took 3.37 ms. Allocated memory is still 88.1 MB. Free memory was 65.3 MB in the beginning and 64.9 MB in the end (delta: 397.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 10]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of to_int at line 34, overapproximation of someBinaryDOUBLEComparisonOperation at line 28. Possible FailurePath: [L25] int r; [L26] double a, x, s; [L27] a = __VERIFIER_nondet_double() [L14] COND FALSE !(!cond) [L29] x = a [L30] s = 3.25 [L31] r = 1 [L33] COND TRUE 1 [L17] COND TRUE !(cond) [L10] __assert_fail("0", "freire2.c", 10, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-29 22:51:51,088 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:51:51,092 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:51:51,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:51:51,152 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:51:51,158 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:51:51,161 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:51:51,165 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:51:51,169 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:51:51,176 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:51:51,178 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:51:51,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:51:51,193 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:51:51,197 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:51:51,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:51:51,201 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:51:51,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:51:51,206 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:51:51,210 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:51:51,218 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:51:51,227 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:51:51,229 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:51:51,231 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:51:51,234 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:51:51,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:51:51,242 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:51:51,242 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:51:51,244 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:51:51,246 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:51:51,247 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:51:51,248 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:51:51,249 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:51:51,251 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:51:51,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:51:51,254 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:51:51,254 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:51:51,255 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:51:51,255 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:51:51,256 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:51:51,258 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:51:51,259 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:51:51,260 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_df0743e2-f832-423f-9069-a9db480b1437/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 22:51:51,306 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:51:51,307 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:51:51,310 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:51:51,310 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:51:51,311 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:51:51,311 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:51:51,312 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 22:51:51,312 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 22:51:51,312 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:51:51,312 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 22:51:51,314 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 22:51:51,314 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 22:51:51,314 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 22:51:51,314 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 22:51:51,315 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 22:51:51,315 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 22:51:51,315 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:51:51,315 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 22:51:51,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:51:51,316 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:51:51,316 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 22:51:51,316 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 22:51:51,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 22:51:51,317 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:51:51,317 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 22:51:51,318 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 22:51:51,318 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 22:51:51,318 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 22:51:51,318 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 22:51:51,318 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:51:51,319 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 22:51:51,319 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:/tmp/vcloud-vcloud-master/worker/run_dir_df0743e2-f832-423f-9069-a9db480b1437/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_df0743e2-f832-423f-9069-a9db480b1437/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 70232273db64c4ed6ec49f2ee7a39af483aa4593 [2020-11-29 22:51:51,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:51:51,814 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:51:51,818 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:51:51,819 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:51:51,820 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:51:51,821 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_df0743e2-f832-423f-9069-a9db480b1437/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c [2020-11-29 22:51:51,888 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_df0743e2-f832-423f-9069-a9db480b1437/bin/uautomizer/data/00deb9f49/22b36527407d4dbeb7ae70b3993eeba7/FLAG07df9a967 [2020-11-29 22:51:52,470 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:51:52,476 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_df0743e2-f832-423f-9069-a9db480b1437/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c [2020-11-29 22:51:52,484 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_df0743e2-f832-423f-9069-a9db480b1437/bin/uautomizer/data/00deb9f49/22b36527407d4dbeb7ae70b3993eeba7/FLAG07df9a967 [2020-11-29 22:51:52,822 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_df0743e2-f832-423f-9069-a9db480b1437/bin/uautomizer/data/00deb9f49/22b36527407d4dbeb7ae70b3993eeba7 [2020-11-29 22:51:52,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:51:52,829 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 22:51:52,834 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:51:52,834 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:51:52,839 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:51:52,840 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:51:52" (1/1) ... [2020-11-29 22:51:52,847 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@838ae3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:52, skipping insertion in model container [2020-11-29 22:51:52,847 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:51:52" (1/1) ... [2020-11-29 22:51:52,855 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:51:52,877 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:51:53,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:51:53,165 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:51:53,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:51:53,233 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:51:53,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:53 WrapperNode [2020-11-29 22:51:53,234 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:51:53,235 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 22:51:53,235 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 22:51:53,235 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 22:51:53,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:53" (1/1) ... [2020-11-29 22:51:53,277 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:53" (1/1) ... [2020-11-29 22:51:53,320 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 22:51:53,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:51:53,325 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:51:53,325 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:51:53,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:53" (1/1) ... [2020-11-29 22:51:53,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:53" (1/1) ... [2020-11-29 22:51:53,345 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:53" (1/1) ... [2020-11-29 22:51:53,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:53" (1/1) ... [2020-11-29 22:51:53,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:53" (1/1) ... [2020-11-29 22:51:53,373 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:53" (1/1) ... [2020-11-29 22:51:53,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:53" (1/1) ... [2020-11-29 22:51:53,379 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:51:53,380 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:51:53,380 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:51:53,380 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:51:53,381 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df0743e2-f832-423f-9069-a9db480b1437/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 [2020-11-29 22:51:53,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 22:51:53,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 22:51:53,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:51:53,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:52:03,864 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:52:03,864 INFO L298 CfgBuilder]: Removed 31 assume(true) statements. [2020-11-29 22:52:03,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:52:03 BoogieIcfgContainer [2020-11-29 22:52:03,866 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:52:03,868 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 22:52:03,869 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 22:52:03,872 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 22:52:03,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 10:51:52" (1/3) ... [2020-11-29 22:52:03,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51047c11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:52:03, skipping insertion in model container [2020-11-29 22:52:03,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:53" (2/3) ... [2020-11-29 22:52:03,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51047c11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:52:03, skipping insertion in model container [2020-11-29 22:52:03,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:52:03" (3/3) ... [2020-11-29 22:52:03,876 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_valuebound20.c [2020-11-29 22:52:03,889 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 22:52:03,894 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-29 22:52:03,907 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-29 22:52:03,934 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 22:52:03,935 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 22:52:03,935 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 22:52:03,935 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:52:03,935 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:52:03,936 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 22:52:03,936 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:52:03,936 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 22:52:03,951 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-29 22:52:03,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 22:52:03,956 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:03,957 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:52:03,958 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:52:03,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:03,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2020-11-29 22:52:03,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:52:03,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1104467340] [2020-11-29 22:52:03,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df0743e2-f832-423f-9069-a9db480b1437/bin/uautomizer/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 [2020-11-29 22:52:04,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:04,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-29 22:52:04,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:52:04,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:52:04,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 22:52:04,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:52:04,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1104467340] [2020-11-29 22:52:04,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:52:04,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 22:52:04,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530309637] [2020-11-29 22:52:04,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 22:52:04,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 22:52:04,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 22:52:04,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 22:52:04,197 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-11-29 22:52:04,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:52:04,219 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2020-11-29 22:52:04,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 22:52:04,221 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-29 22:52:04,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:52:04,230 INFO L225 Difference]: With dead ends: 63 [2020-11-29 22:52:04,230 INFO L226 Difference]: Without dead ends: 29 [2020-11-29 22:52:04,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 22:52:04,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-29 22:52:04,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-29 22:52:04,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-29 22:52:04,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-11-29 22:52:04,289 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2020-11-29 22:52:04,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:52:04,290 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-11-29 22:52:04,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 22:52:04,290 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-11-29 22:52:04,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 22:52:04,291 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:04,291 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:52:04,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 22:52:04,515 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:52:04,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:04,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2020-11-29 22:52:04,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:52:04,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1763596739] [2020-11-29 22:52:04,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df0743e2-f832-423f-9069-a9db480b1437/bin/uautomizer/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 [2020-11-29 22:52:04,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:04,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 22:52:04,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:52:04,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:52:04,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 22:52:08,009 WARN L193 SmtUtils]: Spent 769.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-11-29 22:52:08,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:52:08,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1763596739] [2020-11-29 22:52:08,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:52:08,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-11-29 22:52:08,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917842524] [2020-11-29 22:52:08,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 22:52:08,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 22:52:08,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 22:52:08,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-29 22:52:08,038 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 7 states. [2020-11-29 22:52:32,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:52:32,156 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2020-11-29 22:52:32,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 22:52:32,158 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2020-11-29 22:52:32,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:52:32,159 INFO L225 Difference]: With dead ends: 38 [2020-11-29 22:52:32,159 INFO L226 Difference]: Without dead ends: 36 [2020-11-29 22:52:32,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-29 22:52:32,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-29 22:52:32,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2020-11-29 22:52:32,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-29 22:52:32,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2020-11-29 22:52:32,169 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 7 [2020-11-29 22:52:32,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:52:32,169 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2020-11-29 22:52:32,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 22:52:32,170 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2020-11-29 22:52:32,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 22:52:32,170 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:32,170 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:52:32,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 22:52:32,372 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:52:32,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:32,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1186818322, now seen corresponding path program 1 times [2020-11-29 22:52:32,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:52:32,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1859952827] [2020-11-29 22:52:32,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df0743e2-f832-423f-9069-a9db480b1437/bin/uautomizer/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 [2020-11-29 22:52:33,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:33,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 22:52:33,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:52:33,434 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 22:52:33,578 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 22:52:34,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:52:34,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 22:52:36,158 WARN L838 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)))) is different from false [2020-11-29 22:52:38,199 WARN L860 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)))) is different from true [2020-11-29 22:52:42,919 WARN L193 SmtUtils]: Spent 852.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-11-29 22:52:49,844 WARN L193 SmtUtils]: Spent 2.82 s on a formula simplification that was a NOOP. DAG size: 13 [2020-11-29 22:52:49,867 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 3, 2, 1] term [2020-11-29 22:52:49,868 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-29 22:52:51,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:52:51,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1859952827] [2020-11-29 22:52:51,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:52:51,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2020-11-29 22:52:51,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422523489] [2020-11-29 22:52:51,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 22:52:51,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 22:52:51,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 22:52:51,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=62, Unknown=2, NotChecked=16, Total=110 [2020-11-29 22:52:51,374 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 11 states. [2020-11-29 22:53:06,960 WARN L193 SmtUtils]: Spent 9.14 s on a formula simplification. DAG size of input: 42 DAG size of output: 18 [2020-11-29 22:53:19,000 WARN L193 SmtUtils]: Spent 9.22 s on a formula simplification. DAG size of input: 45 DAG size of output: 21 [2020-11-29 22:53:41,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:53:41,214 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2020-11-29 22:53:41,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 22:53:41,215 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 9 [2020-11-29 22:53:41,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:53:41,216 INFO L225 Difference]: With dead ends: 36 [2020-11-29 22:53:41,216 INFO L226 Difference]: Without dead ends: 34 [2020-11-29 22:53:41,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 43.1s TimeCoverageRelationStatistics Valid=70, Invalid=114, Unknown=2, NotChecked=24, Total=210 [2020-11-29 22:53:41,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-29 22:53:41,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-11-29 22:53:41,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-29 22:53:41,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2020-11-29 22:53:41,226 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 9 [2020-11-29 22:53:41,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:53:41,226 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2020-11-29 22:53:41,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 22:53:41,226 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2020-11-29 22:53:41,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 22:53:41,227 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:53:41,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:53:41,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-29 22:53:41,428 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:53:41,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:53:41,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1928706379, now seen corresponding path program 1 times [2020-11-29 22:53:41,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:53:41,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1880536909] [2020-11-29 22:53:41,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_df0743e2-f832-423f-9069-a9db480b1437/bin/uautomizer/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 [2020-11-29 22:54:13,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:54:13,833 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:54:16,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:54:16,268 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:54:16,436 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-29 22:54:16,437 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 22:54:16,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-29 22:54:16,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 10:54:16 BoogieIcfgContainer [2020-11-29 22:54:16,664 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 22:54:16,665 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:54:16,665 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:54:16,665 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:54:16,666 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:52:03" (3/4) ... [2020-11-29 22:54:16,668 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 22:54:16,735 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_df0743e2-f832-423f-9069-a9db480b1437/bin/uautomizer/witness.graphml [2020-11-29 22:54:16,735 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:54:16,741 INFO L168 Benchmark]: Toolchain (without parser) took 143911.31 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 33.0 MB in the beginning and 37.4 MB in the end (delta: -4.4 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2020-11-29 22:54:16,742 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 54.5 MB. Free memory was 36.2 MB in the beginning and 36.2 MB in the end (delta: 25.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:54:16,742 INFO L168 Benchmark]: CACSL2BoogieTranslator took 399.84 ms. Allocated memory is still 54.5 MB. Free memory was 32.8 MB in the beginning and 37.9 MB in the end (delta: -5.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 22:54:16,743 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.05 ms. Allocated memory is still 54.5 MB. Free memory was 37.9 MB in the beginning and 36.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:54:16,745 INFO L168 Benchmark]: Boogie Preprocessor took 55.53 ms. Allocated memory is still 54.5 MB. Free memory was 36.0 MB in the beginning and 34.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:54:16,747 INFO L168 Benchmark]: RCFGBuilder took 10486.49 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 34.5 MB in the beginning and 47.3 MB in the end (delta: -12.7 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. [2020-11-29 22:54:16,748 INFO L168 Benchmark]: TraceAbstraction took 132796.00 ms. Allocated memory is still 67.1 MB. Free memory was 47.0 MB in the beginning and 39.5 MB in the end (delta: 7.5 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. [2020-11-29 22:54:16,748 INFO L168 Benchmark]: Witness Printer took 74.39 ms. Allocated memory is still 67.1 MB. Free memory was 39.1 MB in the beginning and 37.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:54:16,757 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 54.5 MB. Free memory was 36.2 MB in the beginning and 36.2 MB in the end (delta: 25.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 399.84 ms. Allocated memory is still 54.5 MB. Free memory was 32.8 MB in the beginning and 37.9 MB in the end (delta: -5.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 88.05 ms. Allocated memory is still 54.5 MB. Free memory was 37.9 MB in the beginning and 36.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.53 ms. Allocated memory is still 54.5 MB. Free memory was 36.0 MB in the beginning and 34.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 10486.49 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 34.5 MB in the beginning and 47.3 MB in the end (delta: -12.7 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 132796.00 ms. Allocated memory is still 67.1 MB. Free memory was 47.0 MB in the beginning and 39.5 MB in the end (delta: 7.5 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. * Witness Printer took 74.39 ms. Allocated memory is still 67.1 MB. Free memory was 39.1 MB in the beginning and 37.4 MB in the end (delta: 1.7 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: [L25] int r; [L26] double a, x, s; [L27] a = __VERIFIER_nondet_double() [L14] COND FALSE !(!cond) [L29] x = a [L30] s = 3.25 [L31] r = 1 [L33] COND TRUE 1 [L17] COND FALSE !(!(cond)) [L17] COND FALSE !(!(cond)) [L17] COND TRUE !(cond) [L10] __assert_fail("0", "freire2.c", 10, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 132.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 74.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 80 SDtfs, 37 SDslu, 123 SDs, 0 SdLazy, 80 SolverSat, 16 SolverUnsat, 13 SolverUnknown, 0 SolverNotchecked, 46.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 46.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, 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, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 33.5s SatisfiabilityAnalysisTime, 21.4s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 2520 SizeOfPredicates, 13 NumberOfNonLiveVariables, 102 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 incorrect! Received shutdown request...