java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AbstractInterpretationC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/nla-digbench/prod4br.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 17:28:08,437 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 17:28:08,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 17:28:08,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 17:28:08,455 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 17:28:08,456 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 17:28:08,458 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 17:28:08,469 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 17:28:08,471 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 17:28:08,472 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 17:28:08,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 17:28:08,474 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 17:28:08,474 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 17:28:08,475 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 17:28:08,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 17:28:08,477 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 17:28:08,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 17:28:08,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 17:28:08,484 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 17:28:08,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 17:28:08,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 17:28:08,491 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 17:28:08,492 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 17:28:08,493 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 17:28:08,498 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-16 17:28:08,498 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-16 17:28:08,498 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-16 17:28:08,500 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-16 17:28:08,500 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-16 17:28:08,504 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-16 17:28:08,504 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-16 17:28:08,505 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-16 17:28:08,505 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-16 17:28:08,506 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-16 17:28:08,509 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-16 17:28:08,509 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-16 17:28:08,511 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-16 17:28:08,511 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-16 17:28:08,512 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 17:28:08,512 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 17:28:08,515 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 17:28:08,516 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-16 17:28:08,538 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 17:28:08,539 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 17:28:08,540 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-16 17:28:08,540 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-16 17:28:08,541 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-16 17:28:08,541 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-16 17:28:08,541 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-16 17:28:08,541 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-16 17:28:08,541 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-16 17:28:08,542 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-16 17:28:08,544 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 17:28:08,544 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 17:28:08,545 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 17:28:08,545 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 17:28:08,545 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 17:28:08,545 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 17:28:08,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 17:28:08,546 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 17:28:08,546 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 17:28:08,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 17:28:08,547 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 17:28:08,547 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-16 17:28:08,547 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 17:28:08,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:28:08,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 17:28:08,548 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 17:28:08,548 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-16 17:28:08,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 17:28:08,549 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 17:28:08,549 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-16 17:28:08,592 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 17:28:08,603 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 17:28:08,606 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 17:28:08,608 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 17:28:08,608 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 17:28:08,609 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/prod4br.c [2019-09-16 17:28:08,683 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ffe4200d/82518ad0138c429aac3ddb5cf71dd300/FLAG13a987ee3 [2019-09-16 17:28:09,118 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 17:28:09,118 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/prod4br.c [2019-09-16 17:28:09,127 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ffe4200d/82518ad0138c429aac3ddb5cf71dd300/FLAG13a987ee3 [2019-09-16 17:28:09,487 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ffe4200d/82518ad0138c429aac3ddb5cf71dd300 [2019-09-16 17:28:09,502 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 17:28:09,504 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 17:28:09,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 17:28:09,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 17:28:09,508 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 17:28:09,509 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:28:09" (1/1) ... [2019-09-16 17:28:09,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75576fe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:28:09, skipping insertion in model container [2019-09-16 17:28:09,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:28:09" (1/1) ... [2019-09-16 17:28:09,520 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 17:28:09,543 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 17:28:09,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:28:09,731 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 17:28:09,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:28:09,785 INFO L192 MainTranslator]: Completed translation [2019-09-16 17:28:09,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:28:09 WrapperNode [2019-09-16 17:28:09,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 17:28:09,786 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 17:28:09,786 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 17:28:09,787 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 17:28:09,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:28:09" (1/1) ... [2019-09-16 17:28:09,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:28:09" (1/1) ... [2019-09-16 17:28:09,884 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:28:09" (1/1) ... [2019-09-16 17:28:09,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:28:09" (1/1) ... [2019-09-16 17:28:09,894 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:28:09" (1/1) ... [2019-09-16 17:28:09,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:28:09" (1/1) ... [2019-09-16 17:28:09,904 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:28:09" (1/1) ... [2019-09-16 17:28:09,905 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 17:28:09,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 17:28:09,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 17:28:09,906 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 17:28:09,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:28:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:28:09,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 17:28:09,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 17:28:09,965 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-16 17:28:09,965 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 17:28:09,965 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 17:28:09,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 17:28:09,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-16 17:28:09,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-16 17:28:09,966 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 17:28:09,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 17:28:09,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 17:28:10,179 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 17:28:10,179 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-16 17:28:10,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:28:10 BoogieIcfgContainer [2019-09-16 17:28:10,181 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 17:28:10,182 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2019-09-16 17:28:10,182 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2019-09-16 17:28:10,182 INFO L275 PluginConnector]: Abstract Interpretation initialized [2019-09-16 17:28:10,183 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:28:10" (1/1) ... [2019-09-16 17:28:10,213 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-16 17:28:10,414 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-16 17:28:13,410 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-16 17:28:13,446 INFO L272 AbstractInterpreter]: Visited 32 different actions 421 times. Merged at 14 different actions 107 times. Widened at 3 different actions 6 times. Performed 748 root evaluator evaluations with a maximum evaluation depth of 12. Performed 748 inverse root evaluator evaluations with a maximum inverse evaluation depth of 12. Found 43 fixpoints after 5 different actions. Largest state had 9 variables. [2019-09-16 17:28:13,452 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2019-09-16 17:28:13,459 INFO L168 Benchmark]: Toolchain (without parser) took 3950.55 ms. Allocated memory was 130.0 MB in the beginning and 405.3 MB in the end (delta: 275.3 MB). Free memory was 84.4 MB in the beginning and 185.4 MB in the end (delta: -101.0 MB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. [2019-09-16 17:28:13,463 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 130.0 MB. Free memory was 102.8 MB in the beginning and 102.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 17:28:13,464 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.26 ms. Allocated memory is still 130.0 MB. Free memory was 84.2 MB in the beginning and 74.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2019-09-16 17:28:13,468 INFO L168 Benchmark]: Boogie Preprocessor took 119.31 ms. Allocated memory was 130.0 MB in the beginning and 197.1 MB in the end (delta: 67.1 MB). Free memory was 74.3 MB in the beginning and 173.4 MB in the end (delta: -99.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2019-09-16 17:28:13,469 INFO L168 Benchmark]: RCFGBuilder took 275.23 ms. Allocated memory is still 197.1 MB. Free memory was 173.4 MB in the beginning and 160.2 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2019-09-16 17:28:13,470 INFO L168 Benchmark]: Abstract Interpretation took 3270.67 ms. Allocated memory was 197.1 MB in the beginning and 405.3 MB in the end (delta: 208.1 MB). Free memory was 159.5 MB in the beginning and 185.4 MB in the end (delta: -25.9 MB). Peak memory consumption was 182.3 MB. Max. memory is 7.1 GB. [2019-09-16 17:28:13,475 INFO L335 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 130.0 MB. Free memory was 102.8 MB in the beginning and 102.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 281.26 ms. Allocated memory is still 130.0 MB. Free memory was 84.2 MB in the beginning and 74.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.31 ms. Allocated memory was 130.0 MB in the beginning and 197.1 MB in the end (delta: 67.1 MB). Free memory was 74.3 MB in the beginning and 173.4 MB in the end (delta: -99.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 275.23 ms. Allocated memory is still 197.1 MB. Free memory was 173.4 MB in the beginning and 160.2 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * Abstract Interpretation took 3270.67 ms. Allocated memory was 197.1 MB in the beginning and 405.3 MB in the end (delta: 208.1 MB). Free memory was 159.5 MB in the beginning and 185.4 MB in the end (delta: -25.9 MB). Peak memory consumption was 182.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - UnprovableResult [Line: 9]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: abstract domain could reach this error location. Possible FailurePath: [L15] int x, y; [L16] int a, b, p, q; [L18] x = __VERIFIER_nondet_int() [L19] y = __VERIFIER_nondet_int() [L22] a = x [L23] b = y [L24] p = 1 [L25] q = 0 [L27] COND TRUE 1 [L28] CALL __VERIFIER_assert(q + a * b * p == x * y) [L7] COND TRUE !(cond) [L9] __VERIFIER_error() RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...