/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/geo2-ll_valuebound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-1a84f73 [2021-05-01 08:23:39,012 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-01 08:23:39,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-01 08:23:39,037 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-01 08:23:39,043 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-01 08:23:39,044 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-01 08:23:39,044 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-01 08:23:39,045 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-01 08:23:39,046 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-01 08:23:39,046 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-01 08:23:39,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-01 08:23:39,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-01 08:23:39,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-01 08:23:39,050 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-01 08:23:39,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-01 08:23:39,051 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-01 08:23:39,053 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-01 08:23:39,058 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-01 08:23:39,058 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-01 08:23:39,059 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-01 08:23:39,061 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 08:23:39,068 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-01 08:23:39,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-01 08:23:39,069 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-01 08:23:39,069 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-01 08:23:39,069 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-01 08:23:39,069 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-01 08:23:39,069 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-01 08:23:39,070 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-01 08:23:39,070 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-01 08:23:39,070 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-01 08:23:39,070 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-01 08:23:39,070 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-01 08:23:39,070 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-01 08:23:39,070 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-01 08:23:39,070 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-01 08:23:39,070 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-01 08:23:39,071 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-01 08:23:39,071 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-01 08:23:39,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 08:23:39,071 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-01 08:23:39,071 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-01 08:23:39,071 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-01 08:23:39,071 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-01 08:23:39,071 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-01 08:23:39,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-01 08:23:39,308 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-01 08:23:39,310 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-01 08:23:39,310 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-01 08:23:39,311 INFO L275 PluginConnector]: CDTParser initialized [2021-05-01 08:23:39,312 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo2-ll_valuebound10.c [2021-05-01 08:23:39,374 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/177b68d4a/f567180b2a304abd841a4aa0215ddaeb/FLAGa6416ddf6 [2021-05-01 08:23:39,716 INFO L306 CDTParser]: Found 1 translation units. [2021-05-01 08:23:39,716 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo2-ll_valuebound10.c [2021-05-01 08:23:39,721 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/177b68d4a/f567180b2a304abd841a4aa0215ddaeb/FLAGa6416ddf6 [2021-05-01 08:23:39,735 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/177b68d4a/f567180b2a304abd841a4aa0215ddaeb [2021-05-01 08:23:39,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-01 08:23:39,741 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-01 08:23:39,744 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-01 08:23:39,744 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-01 08:23:39,747 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-01 08:23:39,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 08:23:39" (1/1) ... [2021-05-01 08:23:39,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a89a066 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:39, skipping insertion in model container [2021-05-01 08:23:39,748 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 08:23:39" (1/1) ... [2021-05-01 08:23:39,753 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-01 08:23:39,766 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-01 08:23:39,891 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/geo2-ll_valuebound10.c[525,538] [2021-05-01 08:23:39,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 08:23:39,911 INFO L203 MainTranslator]: Completed pre-run [2021-05-01 08:23:39,920 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/geo2-ll_valuebound10.c[525,538] [2021-05-01 08:23:39,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 08:23:39,945 INFO L208 MainTranslator]: Completed translation [2021-05-01 08:23:39,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:39 WrapperNode [2021-05-01 08:23:39,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-01 08:23:39,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-01 08:23:39,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-01 08:23:39,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-01 08:23:39,954 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:39" (1/1) ... [2021-05-01 08:23:39,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:39" (1/1) ... [2021-05-01 08:23:39,979 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:39" (1/1) ... [2021-05-01 08:23:39,988 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:39" (1/1) ... [2021-05-01 08:23:39,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:39" (1/1) ... [2021-05-01 08:23:39,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:39" (1/1) ... [2021-05-01 08:23:40,001 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:39" (1/1) ... [2021-05-01 08:23:40,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-01 08:23:40,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-01 08:23:40,008 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-01 08:23:40,008 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-01 08:23:40,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:39" (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 08:23:40,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-01 08:23:40,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-01 08:23:40,065 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-01 08:23:40,066 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-01 08:23:40,066 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-01 08:23:40,066 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-01 08:23:40,066 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-01 08:23:40,066 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-01 08:23:40,066 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-01 08:23:40,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-01 08:23:40,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-01 08:23:40,067 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-01 08:23:40,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-01 08:23:40,067 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-01 08:23:40,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-01 08:23:40,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-01 08:23:40,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-01 08:23:40,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-01 08:23:40,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-01 08:23:40,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-01 08:23:40,299 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-01 08:23:40,299 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-01 08:23:40,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 08:23:40 BoogieIcfgContainer [2021-05-01 08:23:40,317 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-01 08:23:40,318 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-01 08:23:40,318 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-01 08:23:40,320 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-01 08:23:40,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 08:23:39" (1/3) ... [2021-05-01 08:23:40,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75006c6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 08:23:40, skipping insertion in model container [2021-05-01 08:23:40,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:39" (2/3) ... [2021-05-01 08:23:40,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75006c6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 08:23:40, skipping insertion in model container [2021-05-01 08:23:40,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 08:23:40" (3/3) ... [2021-05-01 08:23:40,322 INFO L111 eAbstractionObserver]: Analyzing ICFG geo2-ll_valuebound10.c [2021-05-01 08:23:40,326 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-01 08:23:40,329 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-01 08:23:40,340 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-01 08:23:40,375 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-01 08:23:40,376 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-01 08:23:40,376 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-01 08:23:40,376 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-01 08:23:40,376 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-01 08:23:40,376 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-01 08:23:40,376 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-01 08:23:40,376 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-01 08:23:40,391 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 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 08:23:40,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-01 08:23:40,396 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 08:23:40,396 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 08:23:40,397 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 08:23:40,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 08:23:40,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1276201559, now seen corresponding path program 1 times [2021-05-01 08:23:40,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 08:23:40,406 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907678523] [2021-05-01 08:23:40,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 08:23:40,446 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 08:23:40,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:23:40,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:23:40,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:23:40,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:23:40,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:23:40,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 08:23:40,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:23:40,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:23:40,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:23:40,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-01 08:23:40,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:23:40,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:23:40,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:23:40,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:23:40,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:23:40,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-01 08:23:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:23:40,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:23:40,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:23:40,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:23:40,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:23:40,630 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 08:23:40,631 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 08:23:40,631 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1907678523] [2021-05-01 08:23:40,633 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1907678523] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 08:23:40,633 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 08:23:40,633 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-01 08:23:40,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642736082] [2021-05-01 08:23:40,636 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-01 08:23:40,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 08:23:40,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-01 08:23:40,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-01 08:23:40,647 INFO L87 Difference]: Start difference. First operand has 29 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 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 08:23:40,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 08:23:40,736 INFO L93 Difference]: Finished difference Result 51 states and 66 transitions. [2021-05-01 08:23:40,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-01 08:23:40,737 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 08:23:40,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 08:23:40,742 INFO L225 Difference]: With dead ends: 51 [2021-05-01 08:23:40,742 INFO L226 Difference]: Without dead ends: 24 [2021-05-01 08:23:40,744 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-01 08:23:40,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-05-01 08:23:40,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-05-01 08:23:40,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 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 08:23:40,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2021-05-01 08:23:40,773 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 23 [2021-05-01 08:23:40,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 08:23:40,774 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2021-05-01 08:23:40,774 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 08:23:40,774 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2021-05-01 08:23:40,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-01 08:23:40,775 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 08:23:40,775 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 08:23:40,775 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-01 08:23:40,775 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 08:23:40,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 08:23:40,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1874219407, now seen corresponding path program 1 times [2021-05-01 08:23:40,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 08:23:40,776 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192024158] [2021-05-01 08:23:40,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 08:23:40,779 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 08:23:40,795 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-05-01 08:23:40,796 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-05-01 08:23:40,798 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-01 08:23:40,807 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-05-01 08:23:40,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 08:23:40 BoogieIcfgContainer [2021-05-01 08:23:40,807 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-01 08:23:40,812 INFO L168 Benchmark]: Toolchain (without parser) took 1067.07 ms. Allocated memory is still 241.2 MB. Free memory was 206.3 MB in the beginning and 173.0 MB in the end (delta: 33.4 MB). Peak memory consumption was 31.9 MB. Max. memory is 8.0 GB. [2021-05-01 08:23:40,813 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 241.2 MB. Free memory is still 222.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 08:23:40,813 INFO L168 Benchmark]: CACSL2BoogieTranslator took 201.93 ms. Allocated memory is still 241.2 MB. Free memory was 206.1 MB in the beginning and 196.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-05-01 08:23:40,814 INFO L168 Benchmark]: Boogie Preprocessor took 59.36 ms. Allocated memory is still 241.2 MB. Free memory was 196.2 MB in the beginning and 224.9 MB in the end (delta: -28.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 8.0 GB. [2021-05-01 08:23:40,814 INFO L168 Benchmark]: RCFGBuilder took 309.26 ms. Allocated memory is still 241.2 MB. Free memory was 224.9 MB in the beginning and 209.7 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-01 08:23:40,815 INFO L168 Benchmark]: TraceAbstraction took 489.28 ms. Allocated memory is still 241.2 MB. Free memory was 209.1 MB in the beginning and 173.0 MB in the end (delta: 36.2 MB). Peak memory consumption was 35.7 MB. Max. memory is 8.0 GB. [2021-05-01 08:23:40,817 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 241.2 MB. Free memory is still 222.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 201.93 ms. Allocated memory is still 241.2 MB. Free memory was 206.1 MB in the beginning and 196.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 59.36 ms. Allocated memory is still 241.2 MB. Free memory was 196.2 MB in the beginning and 224.9 MB in the end (delta: -28.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 8.0 GB. * RCFGBuilder took 309.26 ms. Allocated memory is still 241.2 MB. Free memory was 224.9 MB in the beginning and 209.7 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 489.28 ms. Allocated memory is still 241.2 MB. Free memory was 209.1 MB in the beginning and 173.0 MB in the end (delta: 36.2 MB). Peak memory consumption was 35.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 17]: 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: [L24] int z, k; [L25] long long x, y, c; [L26] z = __VERIFIER_nondet_int() [L27] CALL assume_abort_if_not(z>=0 && z<=10) [L12] COND FALSE !(!cond) [L27] RET assume_abort_if_not(z>=0 && z<=10) [L28] k = __VERIFIER_nondet_int() [L29] CALL assume_abort_if_not(k>=0 && k<=10) [L12] COND FALSE !(!cond) [L29] RET assume_abort_if_not(k>=0 && k<=10) [L31] x = 1 [L32] y = 1 [L33] c = 1 [L35] COND TRUE 1 [L36] CALL __VERIFIER_assert(1 + x*z - x - z*y == 0) [L15] COND TRUE !(cond) [L17] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 425.3ms, OverallIterations: 2, TraceHistogramMax: 2, EmptinessCheckTime: 9.0ms, AutomataDifference: 107.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 26 SDtfs, 16 SDslu, 3 SDs, 0 SdLazy, 7 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 51.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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: 19.3ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 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...