/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/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/egcd-ll_unwindbound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-1a84f73 [2021-05-01 08:22:10,738 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-01 08:22:10,739 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-01 08:22:10,762 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-01 08:22:10,763 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-01 08:22:10,773 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-01 08:22:10,776 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-01 08:22:10,781 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-01 08:22:10,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-01 08:22:10,788 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-01 08:22:10,789 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-01 08:22:10,791 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-01 08:22:10,792 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-01 08:22:10,794 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-01 08:22:10,795 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-01 08:22:10,796 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-01 08:22:10,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-01 08:22:10,798 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-01 08:22:10,802 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-01 08:22:10,805 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-01 08:22:10,806 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-01 08:22:10,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-01 08:22:10,809 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-01 08:22:10,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-01 08:22:10,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-01 08:22:10,815 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-01 08:22:10,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-01 08:22:10,816 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-01 08:22:10,816 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-01 08:22:10,817 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-01 08:22:10,817 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-01 08:22:10,817 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-01 08:22:10,818 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-01 08:22:10,818 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-01 08:22:10,819 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-01 08:22:10,819 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-01 08:22:10,820 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-01 08:22:10,820 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-01 08:22:10,820 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-01 08:22:10,837 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-01 08:22:10,838 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-01 08:22:10,841 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-01 08:22:10,851 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-01 08:22:10,851 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-01 08:22:10,859 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-01 08:22:10,859 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-01 08:22:10,860 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-01 08:22:10,860 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-01 08:22:10,860 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-01 08:22:10,860 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-01 08:22:10,860 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-01 08:22:10,860 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-01 08:22:10,861 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-01 08:22:10,861 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-01 08:22:10,861 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-01 08:22:10,861 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-01 08:22:10,861 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-01 08:22:10,862 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-01 08:22:10,862 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-01 08:22:10,863 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-01 08:22:10,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 08:22:10,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-01 08:22:10,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-01 08:22:10,867 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-01 08:22:10,867 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-01 08:22:10,867 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-01 08:22:11,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-01 08:22:11,208 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-01 08:22:11,211 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-01 08:22:11,212 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-01 08:22:11,212 INFO L275 PluginConnector]: CDTParser initialized [2021-05-01 08:22:11,213 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd-ll_unwindbound5.c [2021-05-01 08:22:11,281 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcdca59f2/7e243c18469748b9a4327f345df61397/FLAG559f5a339 [2021-05-01 08:22:11,652 INFO L306 CDTParser]: Found 1 translation units. [2021-05-01 08:22:11,653 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd-ll_unwindbound5.c [2021-05-01 08:22:11,659 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcdca59f2/7e243c18469748b9a4327f345df61397/FLAG559f5a339 [2021-05-01 08:22:12,086 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcdca59f2/7e243c18469748b9a4327f345df61397 [2021-05-01 08:22:12,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-01 08:22:12,093 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-01 08:22:12,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-01 08:22:12,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-01 08:22:12,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-01 08:22:12,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 08:22:12" (1/1) ... [2021-05-01 08:22:12,113 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29b4d055 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:12, skipping insertion in model container [2021-05-01 08:22:12,113 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 08:22:12" (1/1) ... [2021-05-01 08:22:12,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-01 08:22:12,136 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-01 08:22:12,308 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/egcd-ll_unwindbound5.c[489,502] [2021-05-01 08:22:12,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 08:22:12,337 INFO L203 MainTranslator]: Completed pre-run [2021-05-01 08:22:12,352 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/egcd-ll_unwindbound5.c[489,502] [2021-05-01 08:22:12,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 08:22:12,371 INFO L208 MainTranslator]: Completed translation [2021-05-01 08:22:12,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:12 WrapperNode [2021-05-01 08:22:12,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-01 08:22:12,374 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-01 08:22:12,374 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-01 08:22:12,375 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-01 08:22:12,415 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:12" (1/1) ... [2021-05-01 08:22:12,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:12" (1/1) ... [2021-05-01 08:22:12,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:12" (1/1) ... [2021-05-01 08:22:12,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:12" (1/1) ... [2021-05-01 08:22:12,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:12" (1/1) ... [2021-05-01 08:22:12,469 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:12" (1/1) ... [2021-05-01 08:22:12,470 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:12" (1/1) ... [2021-05-01 08:22:12,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-01 08:22:12,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-01 08:22:12,473 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-01 08:22:12,473 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-01 08:22:12,474 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:12" (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 08:22:12,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-01 08:22:12,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-01 08:22:12,586 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-01 08:22:12,586 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-01 08:22:12,587 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-01 08:22:12,587 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-01 08:22:12,587 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-01 08:22:12,587 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-01 08:22:12,588 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-01 08:22:12,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-01 08:22:12,588 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-01 08:22:12,589 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-01 08:22:12,589 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-01 08:22:12,589 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-01 08:22:12,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-01 08:22:12,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-01 08:22:12,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-01 08:22:12,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-01 08:22:12,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-01 08:22:12,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-01 08:22:12,874 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-01 08:22:12,875 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-01 08:22:12,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 08:22:12 BoogieIcfgContainer [2021-05-01 08:22:12,876 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-01 08:22:12,878 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-01 08:22:12,878 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-01 08:22:12,881 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-01 08:22:12,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 08:22:12" (1/3) ... [2021-05-01 08:22:12,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c0faa9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 08:22:12, skipping insertion in model container [2021-05-01 08:22:12,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:12" (2/3) ... [2021-05-01 08:22:12,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c0faa9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 08:22:12, skipping insertion in model container [2021-05-01 08:22:12,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 08:22:12" (3/3) ... [2021-05-01 08:22:12,884 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_unwindbound5.c [2021-05-01 08:22:12,889 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-01 08:22:12,893 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-01 08:22:12,910 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-01 08:22:12,928 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-01 08:22:12,928 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-01 08:22:12,928 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-01 08:22:12,928 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-01 08:22:12,929 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-01 08:22:12,929 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-01 08:22:12,929 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-01 08:22:12,929 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-01 08:22:12,966 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-05-01 08:22:12,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-01 08:22:12,972 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 08:22:12,972 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 08:22:12,973 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 08:22:12,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 08:22:12,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1226702723, now seen corresponding path program 1 times [2021-05-01 08:22:12,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 08:22:12,989 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160988883] [2021-05-01 08:22:13,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 08:22:13,073 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 08:22:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:22:13,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:22:13,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:22:13,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:22:13,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:22:13,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 08:22:13,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:22:13,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:22:13,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:22:13,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-01 08:22:13,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:22:13,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:22:13,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:22:13,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:22:13,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:22:13,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-01 08:22:13,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:22:13,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:22:13,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:22:13,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:22:13,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:22:13,302 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 08:22:13,303 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 08:22:13,304 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [160988883] [2021-05-01 08:22:13,306 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [160988883] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 08:22:13,306 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 08:22:13,306 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-01 08:22:13,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354052878] [2021-05-01 08:22:13,311 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-01 08:22:13,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 08:22:13,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-01 08:22:13,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-01 08:22:13,322 INFO L87 Difference]: Start difference. First operand has 35 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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 08:22:13,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 08:22:13,514 INFO L93 Difference]: Finished difference Result 64 states and 97 transitions. [2021-05-01 08:22:13,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-01 08:22:13,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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 22 [2021-05-01 08:22:13,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 08:22:13,521 INFO L225 Difference]: With dead ends: 64 [2021-05-01 08:22:13,521 INFO L226 Difference]: Without dead ends: 31 [2021-05-01 08:22:13,524 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-01 08:22:13,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-05-01 08:22:13,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2021-05-01 08:22:13,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-05-01 08:22:13,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2021-05-01 08:22:13,573 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 22 [2021-05-01 08:22:13,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 08:22:13,573 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2021-05-01 08:22:13,573 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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 08:22:13,573 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2021-05-01 08:22:13,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-01 08:22:13,574 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 08:22:13,575 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 08:22:13,575 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-01 08:22:13,575 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 08:22:13,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 08:22:13,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1346542817, now seen corresponding path program 1 times [2021-05-01 08:22:13,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 08:22:13,576 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [432463402] [2021-05-01 08:22:13,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 08:22:13,583 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 08:22:13,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:22:13,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:22:13,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:22:13,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:22:13,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:22:13,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:22:13,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:22:13,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:22:13,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:22:13,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 08:22:13,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:22:13,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:22:13,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 08:22:13,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-01 08:22:13,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:22:13,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:22:13,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:22:13,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-01 08:22:13,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:22:13,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:22:13,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:22:13,763 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 08:22:13,764 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 08:22:13,764 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [432463402] [2021-05-01 08:22:13,764 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [432463402] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 08:22:13,765 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 08:22:13,765 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-01 08:22:13,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159469112] [2021-05-01 08:22:13,769 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-01 08:22:13,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 08:22:13,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-01 08:22:13,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-01 08:22:13,773 INFO L87 Difference]: Start difference. First operand 30 states and 39 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-01 08:22:13,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 08:22:13,961 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2021-05-01 08:22:13,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-01 08:22:13,962 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2021-05-01 08:22:13,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 08:22:13,963 INFO L225 Difference]: With dead ends: 42 [2021-05-01 08:22:13,963 INFO L226 Difference]: Without dead ends: 32 [2021-05-01 08:22:13,965 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.1ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-01 08:22:13,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-05-01 08:22:13,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-05-01 08:22:13,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-05-01 08:22:13,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2021-05-01 08:22:13,974 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 23 [2021-05-01 08:22:13,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 08:22:13,976 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2021-05-01 08:22:13,976 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-01 08:22:13,976 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2021-05-01 08:22:13,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-01 08:22:13,977 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 08:22:13,977 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 08:22:13,977 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-01 08:22:13,978 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 08:22:13,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 08:22:13,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1348211113, now seen corresponding path program 1 times [2021-05-01 08:22:13,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 08:22:13,979 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [373253454] [2021-05-01 08:22:13,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 08:22:13,981 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 08:22:13,991 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-05-01 08:22:13,992 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-05-01 08:22:13,995 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-01 08:22:14,007 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-05-01 08:22:14,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 08:22:14 BoogieIcfgContainer [2021-05-01 08:22:14,008 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-01 08:22:14,009 INFO L168 Benchmark]: Toolchain (without parser) took 1919.64 ms. Allocated memory is still 192.9 MB. Free memory was 159.1 MB in the beginning and 127.9 MB in the end (delta: 31.2 MB). Peak memory consumption was 31.6 MB. Max. memory is 8.0 GB. [2021-05-01 08:22:14,009 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 192.9 MB. Free memory is still 175.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 08:22:14,010 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.89 ms. Allocated memory is still 192.9 MB. Free memory was 158.7 MB in the beginning and 148.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-05-01 08:22:14,010 INFO L168 Benchmark]: Boogie Preprocessor took 97.65 ms. Allocated memory is still 192.9 MB. Free memory was 148.8 MB in the beginning and 176.5 MB in the end (delta: -27.8 MB). Peak memory consumption was 3.3 MB. Max. memory is 8.0 GB. [2021-05-01 08:22:14,011 INFO L168 Benchmark]: RCFGBuilder took 403.53 ms. Allocated memory is still 192.9 MB. Free memory was 176.5 MB in the beginning and 160.9 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-05-01 08:22:14,011 INFO L168 Benchmark]: TraceAbstraction took 1129.93 ms. Allocated memory is still 192.9 MB. Free memory was 160.3 MB in the beginning and 127.9 MB in the end (delta: 32.5 MB). Peak memory consumption was 33.5 MB. Max. memory is 8.0 GB. [2021-05-01 08:22:14,013 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 192.9 MB. Free memory is still 175.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 277.89 ms. Allocated memory is still 192.9 MB. Free memory was 158.7 MB in the beginning and 148.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 97.65 ms. Allocated memory is still 192.9 MB. Free memory was 148.8 MB in the beginning and 176.5 MB in the end (delta: -27.8 MB). Peak memory consumption was 3.3 MB. Max. memory is 8.0 GB. * RCFGBuilder took 403.53 ms. Allocated memory is still 192.9 MB. Free memory was 176.5 MB in the beginning and 160.9 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1129.93 ms. Allocated memory is still 192.9 MB. Free memory was 160.3 MB in the beginning and 127.9 MB in the end (delta: 32.5 MB). Peak memory consumption was 33.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L18] int counter = 0; [L20] long long a, b, p, q, r, s; [L21] int x, y; [L22] x = __VERIFIER_nondet_int() [L23] y = __VERIFIER_nondet_int() [L24] CALL assume_abort_if_not(x >= 1) [L8] COND FALSE !(!cond) [L24] RET assume_abort_if_not(x >= 1) [L25] CALL assume_abort_if_not(y >= 1) [L8] COND FALSE !(!cond) [L25] RET assume_abort_if_not(y >= 1) [L27] a = x [L28] b = y [L29] p = 1 [L30] q = 0 [L31] r = 0 [L32] s = 1 [L34] EXPR counter++ [L34] COND TRUE counter++<5 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) [L11] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 1070.0ms, OverallIterations: 3, TraceHistogramMax: 2, EmptinessCheckTime: 35.7ms, AutomataDifference: 407.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 74 SDtfs, 23 SDslu, 41 SDs, 0 SdLazy, 70 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 215.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 115.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 45.5ms AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...