/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_unwindbound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 12:28:19,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 12:28:19,522 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 12:28:19,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-06 12:28:19,555 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 12:28:19,556 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 12:28:19,573 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 12:28:19,575 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 12:28:19,576 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 12:28:19,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 12:28:19,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 12:28:19,579 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 12:28:19,580 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 12:28:19,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 12:28:19,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 12:28:19,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 12:28:19,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 12:28:19,600 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 12:28:19,601 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 12:28:19,602 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 12:28:19,603 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-06 12:28:19,617 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 12:28:19,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 12:28:19,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 12:28:19,620 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 12:28:19,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 12:28:19,621 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 12:28:19,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 12:28:19,621 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 12:28:19,621 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 12:28:19,621 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 12:28:19,622 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 12:28:19,622 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 12:28:19,622 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 12:28:19,622 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 12:28:19,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 12:28:19,623 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 12:28:19,623 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 12:28:19,623 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 12:28:19,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 12:28:19,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 12:28:19,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-06 12:28:19,624 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-06 12:28:19,624 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-06 12:28:19,624 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 12:28:19,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 12:28:19,981 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 12:28:19,983 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 12:28:19,984 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 12:28:19,985 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 12:28:19,985 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_unwindbound1.c [2021-05-06 12:28:20,041 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ada244a0c/e90876c09cc341bcbf98fab73b94ad1d/FLAG7f61d13af [2021-05-06 12:28:20,507 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 12:28:20,508 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_unwindbound1.c [2021-05-06 12:28:20,514 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ada244a0c/e90876c09cc341bcbf98fab73b94ad1d/FLAG7f61d13af [2021-05-06 12:28:20,535 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ada244a0c/e90876c09cc341bcbf98fab73b94ad1d [2021-05-06 12:28:20,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 12:28:20,539 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-06 12:28:20,543 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 12:28:20,543 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 12:28:20,546 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 12:28:20,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 12:28:20" (1/1) ... [2021-05-06 12:28:20,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6590bccf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:28:20, skipping insertion in model container [2021-05-06 12:28:20,548 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 12:28:20" (1/1) ... [2021-05-06 12:28:20,555 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 12:28:20,571 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 12:28:20,710 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/egcd2-ll_unwindbound1.c[490,503] [2021-05-06 12:28:20,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 12:28:20,748 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 12:28:20,768 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/egcd2-ll_unwindbound1.c[490,503] [2021-05-06 12:28:20,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 12:28:20,820 INFO L208 MainTranslator]: Completed translation [2021-05-06 12:28:20,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:28:20 WrapperNode [2021-05-06 12:28:20,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 12:28:20,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 12:28:20,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 12:28:20,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 12:28:20,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:28:20" (1/1) ... [2021-05-06 12:28:20,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:28:20" (1/1) ... [2021-05-06 12:28:20,846 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:28:20" (1/1) ... [2021-05-06 12:28:20,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:28:20" (1/1) ... [2021-05-06 12:28:20,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:28:20" (1/1) ... [2021-05-06 12:28:20,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:28:20" (1/1) ... [2021-05-06 12:28:20,866 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:28:20" (1/1) ... [2021-05-06 12:28:20,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 12:28:20,868 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 12:28:20,868 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 12:28:20,868 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 12:28:20,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:28:20" (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 [2021-05-06 12:28:20,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 12:28:20,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 12:28:20,941 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 12:28:20,941 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 12:28:20,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 12:28:20,942 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 12:28:20,942 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 12:28:20,942 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 12:28:20,942 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 12:28:20,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 12:28:20,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 12:28:20,942 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 12:28:20,943 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 12:28:20,943 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 12:28:20,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 12:28:20,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 12:28:20,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 12:28:20,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 12:28:20,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 12:28:20,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 12:28:21,215 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 12:28:21,216 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-06 12:28:21,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 12:28:21 BoogieIcfgContainer [2021-05-06 12:28:21,217 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 12:28:21,219 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 12:28:21,219 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 12:28:21,221 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 12:28:21,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 12:28:20" (1/3) ... [2021-05-06 12:28:21,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7da376a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 12:28:21, skipping insertion in model container [2021-05-06 12:28:21,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:28:20" (2/3) ... [2021-05-06 12:28:21,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7da376a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 12:28:21, skipping insertion in model container [2021-05-06 12:28:21,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 12:28:21" (3/3) ... [2021-05-06 12:28:21,224 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_unwindbound1.c [2021-05-06 12:28:21,229 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-06 12:28:21,232 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 12:28:21,246 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 12:28:21,273 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 12:28:21,273 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-06 12:28:21,273 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-06 12:28:21,273 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 12:28:21,273 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 12:28:21,273 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 12:28:21,273 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 12:28:21,273 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 12:28:21,290 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 23 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-06 12:28:21,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-05-06 12:28:21,297 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 12:28:21,298 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 12:28:21,299 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 12:28:21,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 12:28:21,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1950618521, now seen corresponding path program 1 times [2021-05-06 12:28:21,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 12:28:21,312 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247734394] [2021-05-06 12:28:21,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 12:28:21,360 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 12:28:21,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 12:28:21,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 12:28:21,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 12:28:21,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-06 12:28:21,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 12:28:21,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-06 12:28:21,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 12:28:21,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-06 12:28:21,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 12:28:21,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-05-06 12:28:21,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 12:28:21,570 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-05-06 12:28:21,572 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 12:28:21,572 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247734394] [2021-05-06 12:28:21,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1247734394] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 12:28:21,573 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 12:28:21,574 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 12:28:21,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844369094] [2021-05-06 12:28:21,577 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 12:28:21,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 12:28:21,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 12:28:21,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 12:28:21,589 INFO L87 Difference]: Start difference. First operand has 39 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 23 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) 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, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-06 12:28:21,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 12:28:21,726 INFO L93 Difference]: Finished difference Result 72 states and 112 transitions. [2021-05-06 12:28:21,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 12:28:21,728 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, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 32 [2021-05-06 12:28:21,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 12:28:21,734 INFO L225 Difference]: With dead ends: 72 [2021-05-06 12:28:21,734 INFO L226 Difference]: Without dead ends: 35 [2021-05-06 12:28:21,736 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 12:28:21,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-06 12:28:21,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2021-05-06 12:28:21,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 20 states have internal predecessors, (23), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-06 12:28:21,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2021-05-06 12:28:21,774 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 32 [2021-05-06 12:28:21,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 12:28:21,774 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2021-05-06 12:28:21,774 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, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-06 12:28:21,774 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2021-05-06 12:28:21,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-06 12:28:21,778 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 12:28:21,779 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 12:28:21,779 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 12:28:21,779 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 12:28:21,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 12:28:21,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1734391985, now seen corresponding path program 1 times [2021-05-06 12:28:21,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 12:28:21,780 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163266428] [2021-05-06 12:28:21,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 12:28:21,782 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 12:28:21,812 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-05-06 12:28:21,812 INFO L624 BasicCegarLoop]: Counterexample might be feasible [2021-05-06 12:28:21,817 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 12:28:21,831 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-05-06 12:28:21,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 12:28:21 BoogieIcfgContainer [2021-05-06 12:28:21,832 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 12:28:21,834 INFO L168 Benchmark]: Toolchain (without parser) took 1294.44 ms. Allocated memory is still 255.9 MB. Free memory was 219.9 MB in the beginning and 219.5 MB in the end (delta: 352.4 kB). Peak memory consumption was 1.3 MB. Max. memory is 8.0 GB. [2021-05-06 12:28:21,835 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 255.9 MB. Free memory is still 236.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 12:28:21,836 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.09 ms. Allocated memory is still 255.9 MB. Free memory was 219.7 MB in the beginning and 237.9 MB in the end (delta: -18.2 MB). Peak memory consumption was 11.8 MB. Max. memory is 8.0 GB. [2021-05-06 12:28:21,837 INFO L168 Benchmark]: Boogie Preprocessor took 46.00 ms. Allocated memory is still 255.9 MB. Free memory was 237.9 MB in the beginning and 236.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-06 12:28:21,838 INFO L168 Benchmark]: RCFGBuilder took 349.51 ms. Allocated memory is still 255.9 MB. Free memory was 236.2 MB in the beginning and 219.4 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-05-06 12:28:21,840 INFO L168 Benchmark]: TraceAbstraction took 613.69 ms. Allocated memory is still 255.9 MB. Free memory was 218.7 MB in the beginning and 219.5 MB in the end (delta: -787.7 kB). Peak memory consumption was 74.7 kB. Max. memory is 8.0 GB. [2021-05-06 12:28:21,845 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 255.9 MB. Free memory is still 236.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 278.09 ms. Allocated memory is still 255.9 MB. Free memory was 219.7 MB in the beginning and 237.9 MB in the end (delta: -18.2 MB). Peak memory consumption was 11.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 46.00 ms. Allocated memory is still 255.9 MB. Free memory was 237.9 MB in the beginning and 236.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 349.51 ms. Allocated memory is still 255.9 MB. Free memory was 236.2 MB in the beginning and 219.4 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 613.69 ms. Allocated memory is still 255.9 MB. Free memory was 218.7 MB in the beginning and 219.5 MB in the end (delta: -787.7 kB). Peak memory consumption was 74.7 kB. 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] int x, y; [L21] long long a, b, p, q, r, s, c, k, xy, yy; [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 [L33] c = 0 [L34] k = 0 [L35] xy = (long long) x * y [L36] yy = (long long) y * y [L37] CALL assume_abort_if_not(xy < 2147483647) [L8] COND FALSE !(!cond) [L37] RET assume_abort_if_not(xy < 2147483647) [L38] CALL assume_abort_if_not(yy < 2147483647) [L8] COND FALSE !(!cond) [L38] RET assume_abort_if_not(yy < 2147483647) [L40] EXPR counter++ [L40] COND FALSE !(counter++<1) [L70] CALL __VERIFIER_assert(q*x + s*y == 0) [L11] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 547.2ms, OverallIterations: 2, TraceHistogramMax: 4, EmptinessCheckTime: 14.6ms, AutomataDifference: 158.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 44 SDtfs, 10 SDslu, 4 SDs, 0 SdLazy, 26 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 83.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 26.2ms AutomataMinimizationTime, 1 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...