/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/geo1-u_valuebound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-1a84f73 [2021-05-01 01:22:50,442 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-01 01:22:50,445 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-01 01:22:50,483 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-01 01:22:50,483 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-01 01:22:50,486 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-01 01:22:50,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-01 01:22:50,493 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-01 01:22:50,495 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-01 01:22:50,499 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-01 01:22:50,500 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-01 01:22:50,501 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-01 01:22:50,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-01 01:22:50,503 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-01 01:22:50,505 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-01 01:22:50,506 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-01 01:22:50,508 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-01 01:22:50,509 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-01 01:22:50,511 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-01 01:22:50,516 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-01 01:22:50,517 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-01 01:22:50,518 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-01 01:22:50,519 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-01 01:22:50,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-01 01:22:50,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-01 01:22:50,527 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-01 01:22:50,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-01 01:22:50,528 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-01 01:22:50,529 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-01 01:22:50,529 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-01 01:22:50,530 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-01 01:22:50,530 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-01 01:22:50,552 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-01 01:22:50,552 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-01 01:22:50,553 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-01 01:22:50,553 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-01 01:22:50,554 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-01 01:22:50,554 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-01 01:22:50,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-01 01:22:50,555 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-01 01:22:50,556 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-01 01:22:50,557 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-05-01 01:22:50,581 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-01 01:22:50,581 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-01 01:22:50,584 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-01 01:22:50,585 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-01 01:22:50,585 INFO L138 SettingsManager]: * Use SBE=true [2021-05-01 01:22:50,585 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-01 01:22:50,585 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-01 01:22:50,585 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-01 01:22:50,586 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-01 01:22:50,586 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-01 01:22:50,586 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-01 01:22:50,587 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-01 01:22:50,587 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-01 01:22:50,587 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-01 01:22:50,587 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-01 01:22:50,587 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-01 01:22:50,587 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-01 01:22:50,587 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-01 01:22:50,587 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-01 01:22:50,588 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-01 01:22:50,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 01:22:50,588 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-01 01:22:50,588 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-01 01:22:50,588 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-01 01:22:50,588 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-01 01:22:50,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-01 01:22:50,589 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-01 01:22:50,589 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-01 01:22:50,589 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-01 01:22:50,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-01 01:22:50,953 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-01 01:22:50,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-01 01:22:50,956 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-01 01:22:50,957 INFO L275 PluginConnector]: CDTParser initialized [2021-05-01 01:22:50,958 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo1-u_valuebound10.c [2021-05-01 01:22:51,034 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c49bb2121/8b9fea711c5e433585c3df081e2785f1/FLAG8ae996b15 [2021-05-01 01:22:51,461 INFO L306 CDTParser]: Found 1 translation units. [2021-05-01 01:22:51,462 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo1-u_valuebound10.c [2021-05-01 01:22:51,467 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c49bb2121/8b9fea711c5e433585c3df081e2785f1/FLAG8ae996b15 [2021-05-01 01:22:51,882 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c49bb2121/8b9fea711c5e433585c3df081e2785f1 [2021-05-01 01:22:51,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-01 01:22:51,886 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-01 01:22:51,889 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-01 01:22:51,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-01 01:22:51,892 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-01 01:22:51,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 01:22:51" (1/1) ... [2021-05-01 01:22:51,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33e94e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 01:22:51, skipping insertion in model container [2021-05-01 01:22:51,893 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 01:22:51" (1/1) ... [2021-05-01 01:22:51,900 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-01 01:22:51,913 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-01 01:22:52,011 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo1-u_valuebound10.c[563,576] [2021-05-01 01:22:52,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 01:22:52,030 INFO L203 MainTranslator]: Completed pre-run [2021-05-01 01:22:52,063 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo1-u_valuebound10.c[563,576] [2021-05-01 01:22:52,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 01:22:52,089 INFO L208 MainTranslator]: Completed translation [2021-05-01 01:22:52,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 01:22:52 WrapperNode [2021-05-01 01:22:52,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-01 01:22:52,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-01 01:22:52,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-01 01:22:52,095 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-01 01:22:52,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 01:22:52" (1/1) ... [2021-05-01 01:22:52,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 01:22:52" (1/1) ... [2021-05-01 01:22:52,111 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 01:22:52" (1/1) ... [2021-05-01 01:22:52,111 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 01:22:52" (1/1) ... [2021-05-01 01:22:52,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 01:22:52" (1/1) ... [2021-05-01 01:22:52,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 01:22:52" (1/1) ... [2021-05-01 01:22:52,130 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 01:22:52" (1/1) ... [2021-05-01 01:22:52,138 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-01 01:22:52,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-01 01:22:52,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-01 01:22:52,140 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-01 01:22:52,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 01:22:52" (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 [2021-05-01 01:22:52,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-01 01:22:52,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-01 01:22:52,219 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-01 01:22:52,219 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-01 01:22:52,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-01 01:22:52,219 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-01 01:22:52,219 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-01 01:22:52,219 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-01 01:22:52,220 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-01 01:22:52,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-01 01:22:52,220 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2021-05-01 01:22:52,220 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-01 01:22:52,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-01 01:22:52,221 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-01 01:22:52,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-01 01:22:52,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-01 01:22:52,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-01 01:22:52,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-01 01:22:52,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-01 01:22:52,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-01 01:22:52,464 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-01 01:22:52,464 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-01 01:22:52,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 01:22:52 BoogieIcfgContainer [2021-05-01 01:22:52,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-01 01:22:52,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-01 01:22:52,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-01 01:22:52,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-01 01:22:52,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 01:22:51" (1/3) ... [2021-05-01 01:22:52,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f7988e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 01:22:52, skipping insertion in model container [2021-05-01 01:22:52,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 01:22:52" (2/3) ... [2021-05-01 01:22:52,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f7988e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 01:22:52, skipping insertion in model container [2021-05-01 01:22:52,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 01:22:52" (3/3) ... [2021-05-01 01:22:52,472 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-u_valuebound10.c [2021-05-01 01:22:52,477 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-01 01:22:52,480 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-01 01:22:52,494 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-01 01:22:52,514 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-01 01:22:52,514 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-01 01:22:52,514 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-01 01:22:52,514 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-01 01:22:52,514 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-01 01:22:52,514 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-01 01:22:52,514 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-01 01:22:52,514 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-01 01:22:52,543 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-01 01:22:52,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-01 01:22:52,547 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 01:22:52,547 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 01:22:52,548 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 01:22:52,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 01:22:52,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1335806002, now seen corresponding path program 1 times [2021-05-01 01:22:52,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-01 01:22:52,564 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712233823] [2021-05-01 01:22:52,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 01:22:52,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 01:22:52,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:52,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:52,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:52,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:52,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 01:22:52,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 01:22:52,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:52,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:52,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-01 01:22:52,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 01:22:52,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:52,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:52,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:52,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:52,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-01 01:22:52,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 01:22:52,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:52,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:52,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:52,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:52,822 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-01 01:22:52,823 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-01 01:22:52,823 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712233823] [2021-05-01 01:22:52,824 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712233823] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 01:22:52,824 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 01:22:52,824 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-01 01:22:52,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366606183] [2021-05-01 01:22:52,828 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-01 01:22:52,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-01 01:22:52,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-01 01:22:52,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-01 01:22:52,839 INFO L87 Difference]: Start difference. First operand has 30 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-01 01:22:52,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 01:22:52,909 INFO L93 Difference]: Finished difference Result 53 states and 68 transitions. [2021-05-01 01:22:52,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-01 01:22:52,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2021-05-01 01:22:52,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 01:22:52,918 INFO L225 Difference]: With dead ends: 53 [2021-05-01 01:22:52,918 INFO L226 Difference]: Without dead ends: 25 [2021-05-01 01:22:52,921 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 67.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-01 01:22:52,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-05-01 01:22:52,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-05-01 01:22:52,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 01:22:52,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-05-01 01:22:52,954 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 23 [2021-05-01 01:22:52,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 01:22:52,954 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-05-01 01:22:52,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-01 01:22:52,955 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-05-01 01:22:52,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-01 01:22:52,956 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 01:22:52,956 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 01:22:52,956 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-01 01:22:52,957 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 01:22:52,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 01:22:52,957 INFO L82 PathProgramCache]: Analyzing trace with hash 736000694, now seen corresponding path program 1 times [2021-05-01 01:22:52,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-01 01:22:52,958 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351694471] [2021-05-01 01:22:52,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 01:22:52,984 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-01 01:22:52,985 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [775398054] [2021-05-01 01:22:52,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-01 01:22:53,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 01:22:53,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-01 01:22:53,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-01 01:22:53,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:53,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:53,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:53,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:53,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:53,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:53,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:53,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:53,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:53,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:53,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:53,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:53,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:53,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:53,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:53,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:53,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:53,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:53,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:53,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:53,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:53,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:53,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:53,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:53,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:53,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:53,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:53,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:53,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 01:22:53,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 01:22:53,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 01:22:53,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 01:22:53,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-05-01 01:22:53,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 01:22:53,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 01:22:53,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 01:22:53,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 01:22:53,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 01:22:53,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 01:22:53,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 01:22:53,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 01:22:53,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 01:22:53,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 01:22:53,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 01:22:53,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 01:22:53,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 01:22:53,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 01:22:53,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 01:22:53,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 01:22:53,216 INFO L142 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-05-01 01:22:53,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 01:22:53,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-05-01 01:22:53,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 01:22:53,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 01:22:53,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-05-01 01:22:53,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:53,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:53,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:53,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:53,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:53,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:53,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:53,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:53,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:53,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:53,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:53,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:53,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:53,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:53,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 01:22:53,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 01:22:53,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 01:22:53,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 01:22:53,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 01:22:53,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 01:22:53,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 01:22:53,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 01:22:53,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 01:22:53,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 01:22:53,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 01:22:53,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 01:22:53,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 01:22:53,325 INFO L142 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-05-01 01:22:53,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 01:22:53,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 01:22:53,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 01:22:53,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 01:22:53,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 01:22:53,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 01:22:53,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 01:22:53,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 01:22:53,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 01:22:53,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 01:22:53,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 01:22:53,359 INFO L142 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-05-01 01:22:53,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:53,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:53,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:53,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 01:22:53,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 01:22:53,363 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-01 01:22:53,363 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-01 01:22:53,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351694471] [2021-05-01 01:22:53,363 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-01 01:22:53,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775398054] [2021-05-01 01:22:53,364 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775398054] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-01 01:22:53,364 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-01 01:22:53,364 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-01 01:22:53,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464765895] [2021-05-01 01:22:53,366 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-01 01:22:53,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-01 01:22:53,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-01 01:22:53,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-01 01:22:53,368 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-01 01:22:53,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 01:22:53,498 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2021-05-01 01:22:53,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-01 01:22:53,499 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2021-05-01 01:22:53,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 01:22:53,500 INFO L225 Difference]: With dead ends: 35 [2021-05-01 01:22:53,501 INFO L226 Difference]: Without dead ends: 33 [2021-05-01 01:22:53,501 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 62.4ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-05-01 01:22:53,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-05-01 01:22:53,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2021-05-01 01:22:53,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 19 states have (on average 1.105263157894737) internal successors, (21), 21 states have internal predecessors, (21), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-01 01:22:53,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2021-05-01 01:22:53,510 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 23 [2021-05-01 01:22:53,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 01:22:53,511 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2021-05-01 01:22:53,511 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-01 01:22:53,511 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2021-05-01 01:22:53,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-05-01 01:22:53,512 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 01:22:53,512 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 01:22:53,713 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-01 01:22:53,713 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 01:22:53,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 01:22:53,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1598096837, now seen corresponding path program 1 times [2021-05-01 01:22:53,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-01 01:22:53,714 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621553174] [2021-05-01 01:22:53,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 01:22:53,755 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-01 01:22:53,755 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1459951493] [2021-05-01 01:22:53,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-01 01:22:53,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-01 01:22:53,801 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-01 01:22:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-01 01:22:53,816 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-01 01:22:53,846 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-05-01 01:22:53,846 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-05-01 01:22:54,070 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-01 01:22:54,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 01:22:54 BoogieIcfgContainer [2021-05-01 01:22:54,092 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-01 01:22:54,093 INFO L168 Benchmark]: Toolchain (without parser) took 2206.92 ms. Allocated memory is still 178.3 MB. Free memory was 142.3 MB in the beginning and 145.9 MB in the end (delta: -3.6 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 01:22:54,093 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 178.3 MB. Free memory is still 158.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 01:22:54,093 INFO L168 Benchmark]: CACSL2BoogieTranslator took 203.80 ms. Allocated memory is still 178.3 MB. Free memory was 142.1 MB in the beginning and 161.4 MB in the end (delta: -19.2 MB). Peak memory consumption was 10.7 MB. Max. memory is 8.0 GB. [2021-05-01 01:22:54,093 INFO L168 Benchmark]: Boogie Preprocessor took 44.98 ms. Allocated memory is still 178.3 MB. Free memory was 161.4 MB in the beginning and 159.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-01 01:22:54,094 INFO L168 Benchmark]: RCFGBuilder took 325.92 ms. Allocated memory is still 178.3 MB. Free memory was 159.8 MB in the beginning and 145.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-01 01:22:54,094 INFO L168 Benchmark]: TraceAbstraction took 1624.77 ms. Allocated memory is still 178.3 MB. Free memory was 145.1 MB in the beginning and 145.9 MB in the end (delta: -817.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 01:22:54,095 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 178.3 MB. Free memory is still 158.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 203.80 ms. Allocated memory is still 178.3 MB. Free memory was 142.1 MB in the beginning and 161.4 MB in the end (delta: -19.2 MB). Peak memory consumption was 10.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.98 ms. Allocated memory is still 178.3 MB. Free memory was 161.4 MB in the beginning and 159.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 325.92 ms. Allocated memory is still 178.3 MB. Free memory was 159.8 MB in the beginning and 145.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1624.77 ms. Allocated memory is still 178.3 MB. Free memory was 145.1 MB in the beginning and 145.9 MB in the end (delta: -817.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L23] unsigned int z, k; [L24] long long x, y, c; [L25] z = __VERIFIER_nondet_unsigned_int() [L26] CALL assume_abort_if_not(z>=0 && z<=10) VAL [\old(cond)=1] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L26] RET assume_abort_if_not(z>=0 && z<=10) VAL [z=0] [L27] k = __VERIFIER_nondet_unsigned_int() [L28] CALL assume_abort_if_not(k>=0 && k<=10) VAL [\old(cond)=1] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L28] RET assume_abort_if_not(k>=0 && k<=10) VAL [k=0, z=0] [L30] x = 1 [L31] y = z [L32] c = 1 VAL [c=1, k=0, x=1, y=0, z=0] [L34] COND TRUE 1 VAL [c=1, k=0, x=1, y=0, z=0] [L35] CALL __VERIFIER_assert(x*z - x - y + 1 == 0) VAL [\old(cond)=1] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L35] RET __VERIFIER_assert(x*z - x - y + 1 == 0) VAL [c=1, k=0, x=1, y=0, z=0] [L37] COND TRUE !(c < k) VAL [c=1, k=0, x=1, y=0, z=0] [L46] x = x * (z - 1) VAL [c=1, k=0, x=4294967295, y=0, z=0] [L48] CALL __VERIFIER_assert(1 + x - y == 0) VAL [\old(cond)=0] [L16] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L18] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1559.2ms, OverallIterations: 3, TraceHistogramMax: 2, EmptinessCheckTime: 12.1ms, AutomataDifference: 227.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 22.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 46 SDtfs, 31 SDslu, 100 SDs, 0 SdLazy, 70 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 93.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=2, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 29.8ms AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 34.9ms SsaConstructionTime, 103.4ms SatisfiabilityAnalysisTime, 430.4ms InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 124 SizeOfPredicates, 2 NumberOfNonLiveVariables, 109 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 5/8 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...