/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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/nla-digbench/geo1-u.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 06:57:40,236 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 06:57:40,238 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 06:57:40,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-06 06:57:40,269 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-06 06:57:40,271 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-06 06:57:40,273 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-06 06:57:40,277 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-06 06:57:40,279 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-06 06:57:40,282 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-06 06:57:40,283 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-06 06:57:40,284 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-06 06:57:40,284 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 06:57:40,285 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 06:57:40,286 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 06:57:40,287 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 06:57:40,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 06:57:40,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 06:57:40,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 06:57:40,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 06:57:40,297 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 06:57:40,298 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 06:57:40,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 06:57:40,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 06:57:40,306 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 06:57:40,319 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 06:57:40,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 06:57:40,320 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 06:57:40,323 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-06 06:57:40,340 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 06:57:40,340 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 06:57:40,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 06:57:40,342 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 06:57:40,343 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 06:57:40,343 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 06:57:40,343 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 06:57:40,343 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 06:57:40,343 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 06:57:40,343 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 06:57:40,344 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 06:57:40,344 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 06:57:40,344 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 06:57:40,344 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 06:57:40,344 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 06:57:40,345 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 06:57:40,345 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 06:57:40,345 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 06:57:40,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 06:57:40,345 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 06:57:40,345 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 06:57:40,346 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-06 06:57:40,346 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 06:57:40,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 06:57:40,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 06:57:40,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 06:57:40,613 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 06:57:40,614 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 06:57:40,614 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/geo1-u.c [2021-05-06 06:57:40,654 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55556d617/1291ac6a894b464c8083969bc1e3f6b8/FLAGcff9e741e [2021-05-06 06:57:41,024 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 06:57:41,025 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/geo1-u.c [2021-05-06 06:57:41,029 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55556d617/1291ac6a894b464c8083969bc1e3f6b8/FLAGcff9e741e [2021-05-06 06:57:41,041 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55556d617/1291ac6a894b464c8083969bc1e3f6b8 [2021-05-06 06:57:41,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 06:57:41,044 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-06 06:57:41,047 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 06:57:41,047 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 06:57:41,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 06:57:41,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 06:57:41" (1/1) ... [2021-05-06 06:57:41,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3db2476a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:57:41, skipping insertion in model container [2021-05-06 06:57:41,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 06:57:41" (1/1) ... [2021-05-06 06:57:41,055 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 06:57:41,064 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 06:57:41,170 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/geo1-u.c[563,576] [2021-05-06 06:57:41,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 06:57:41,188 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 06:57:41,196 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/geo1-u.c[563,576] [2021-05-06 06:57:41,202 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 06:57:41,211 INFO L208 MainTranslator]: Completed translation [2021-05-06 06:57:41,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:57:41 WrapperNode [2021-05-06 06:57:41,212 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 06:57:41,213 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 06:57:41,213 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 06:57:41,213 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 06:57:41,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:57:41" (1/1) ... [2021-05-06 06:57:41,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:57:41" (1/1) ... [2021-05-06 06:57:41,237 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:57:41" (1/1) ... [2021-05-06 06:57:41,237 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:57:41" (1/1) ... [2021-05-06 06:57:41,248 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:57:41" (1/1) ... [2021-05-06 06:57:41,251 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:57:41" (1/1) ... [2021-05-06 06:57:41,252 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:57:41" (1/1) ... [2021-05-06 06:57:41,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 06:57:41,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 06:57:41,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 06:57:41,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 06:57:41,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:57:41" (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 06:57:41,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 06:57:41,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 06:57:41,316 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 06:57:41,316 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 06:57:41,316 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 06:57:41,316 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 06:57:41,316 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 06:57:41,317 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 06:57:41,317 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 06:57:41,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 06:57:41,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2021-05-06 06:57:41,317 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 06:57:41,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 06:57:41,318 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 06:57:41,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 06:57:41,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 06:57:41,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 06:57:41,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 06:57:41,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 06:57:41,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 06:57:41,521 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 06:57:41,521 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-06 06:57:41,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:57:41 BoogieIcfgContainer [2021-05-06 06:57:41,522 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 06:57:41,523 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-06 06:57:41,523 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-06 06:57:41,523 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-06 06:57:41,525 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:57:41" (1/1) ... [2021-05-06 06:57:41,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 06:57:41 BasicIcfg [2021-05-06 06:57:41,555 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-06 06:57:41,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 06:57:41,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 06:57:41,558 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 06:57:41,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 06:57:41" (1/4) ... [2021-05-06 06:57:41,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3857ecaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 06:57:41, skipping insertion in model container [2021-05-06 06:57:41,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:57:41" (2/4) ... [2021-05-06 06:57:41,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3857ecaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 06:57:41, skipping insertion in model container [2021-05-06 06:57:41,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:57:41" (3/4) ... [2021-05-06 06:57:41,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3857ecaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 06:57:41, skipping insertion in model container [2021-05-06 06:57:41,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 06:57:41" (4/4) ... [2021-05-06 06:57:41,559 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-u.cJordan [2021-05-06 06:57:41,563 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-06 06:57:41,568 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 06:57:41,578 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 06:57:41,602 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 06:57:41,602 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-06 06:57:41,602 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-06 06:57:41,603 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 06:57:41,603 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 06:57:41,603 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 06:57:41,603 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 06:57:41,603 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 06:57:41,614 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-06 06:57:41,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-06 06:57:41,619 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:57:41,620 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:57:41,620 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:57:41,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:57:41,624 INFO L82 PathProgramCache]: Analyzing trace with hash -628176271, now seen corresponding path program 1 times [2021-05-06 06:57:41,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:57:41,630 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012000144] [2021-05-06 06:57:41,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:57:41,716 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 06:57:41,717 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [310093640] [2021-05-06 06:57:41,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:57:41,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:57:41,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-06 06:57:41,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:57:41,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:57:41,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 06:57:41,893 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:57:41,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012000144] [2021-05-06 06:57:41,893 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 06:57:41,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310093640] [2021-05-06 06:57:41,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310093640] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 06:57:41,894 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 06:57:41,894 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-06 06:57:41,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545547792] [2021-05-06 06:57:41,898 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-06 06:57:41,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:57:41,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-06 06:57:41,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-06 06:57:41,909 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:57:41,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:57:41,967 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2021-05-06 06:57:41,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-06 06:57:41,975 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-05-06 06:57:41,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:57:41,980 INFO L225 Difference]: With dead ends: 30 [2021-05-06 06:57:41,980 INFO L226 Difference]: Without dead ends: 25 [2021-05-06 06:57:41,981 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.3ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-06 06:57:41,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-05-06 06:57:42,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2021-05-06 06:57:42,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 16 states have internal predecessors, (16), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 06:57:42,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2021-05-06 06:57:42,005 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 11 [2021-05-06 06:57:42,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:57:42,005 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2021-05-06 06:57:42,006 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:57:42,006 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2021-05-06 06:57:42,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-06 06:57:42,007 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:57:42,007 INFO L523 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:57:42,225 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-05-06 06:57:42,225 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:57:42,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:57:42,226 INFO L82 PathProgramCache]: Analyzing trace with hash -337724478, now seen corresponding path program 1 times [2021-05-06 06:57:42,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:57:42,226 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765395987] [2021-05-06 06:57:42,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:57:42,250 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 06:57:42,250 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1247026813] [2021-05-06 06:57:42,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:57:42,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-06 06:57:42,326 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-06 06:57:42,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-06 06:57:42,339 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-06 06:57:42,357 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-05-06 06:57:42,358 INFO L624 BasicCegarLoop]: Counterexample might be feasible [2021-05-06 06:57:42,558 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:57:42,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 06:57:42 BasicIcfg [2021-05-06 06:57:42,575 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 06:57:42,576 INFO L168 Benchmark]: Toolchain (without parser) took 1531.75 ms. Allocated memory is still 189.8 MB. Free memory was 155.9 MB in the beginning and 160.7 MB in the end (delta: -4.8 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 06:57:42,576 INFO L168 Benchmark]: CDTParser took 0.08 ms. Allocated memory is still 189.8 MB. Free memory is still 172.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 06:57:42,576 INFO L168 Benchmark]: CACSL2BoogieTranslator took 164.86 ms. Allocated memory is still 189.8 MB. Free memory was 155.7 MB in the beginning and 146.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-06 06:57:42,576 INFO L168 Benchmark]: Boogie Preprocessor took 45.31 ms. Allocated memory is still 189.8 MB. Free memory was 146.1 MB in the beginning and 173.5 MB in the end (delta: -27.4 MB). Peak memory consumption was 4.6 MB. Max. memory is 8.0 GB. [2021-05-06 06:57:42,577 INFO L168 Benchmark]: RCFGBuilder took 263.58 ms. Allocated memory is still 189.8 MB. Free memory was 173.0 MB in the beginning and 159.3 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-05-06 06:57:42,577 INFO L168 Benchmark]: IcfgTransformer took 31.90 ms. Allocated memory is still 189.8 MB. Free memory was 159.3 MB in the beginning and 158.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-06 06:57:42,577 INFO L168 Benchmark]: TraceAbstraction took 1019.38 ms. Allocated memory is still 189.8 MB. Free memory was 157.8 MB in the beginning and 160.7 MB in the end (delta: -2.9 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 06:57:42,579 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08 ms. Allocated memory is still 189.8 MB. Free memory is still 172.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 164.86 ms. Allocated memory is still 189.8 MB. Free memory was 155.7 MB in the beginning and 146.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 45.31 ms. Allocated memory is still 189.8 MB. Free memory was 146.1 MB in the beginning and 173.5 MB in the end (delta: -27.4 MB). Peak memory consumption was 4.6 MB. Max. memory is 8.0 GB. * RCFGBuilder took 263.58 ms. Allocated memory is still 189.8 MB. Free memory was 173.0 MB in the beginning and 159.3 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * IcfgTransformer took 31.90 ms. Allocated memory is still 189.8 MB. Free memory was 159.3 MB in the beginning and 158.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1019.38 ms. Allocated memory is still 189.8 MB. Free memory was 157.8 MB in the beginning and 160.7 MB in the end (delta: -2.9 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L23] unsigned int z, k; [L24] long long x, y, c; [L25] z = __VERIFIER_nondet_unsigned_int() [L26] k = __VERIFIER_nondet_unsigned_int() [L28] x = 1 [L29] y = z [L30] c = 1 VAL [c=1, x=1, y=0, z=0] [L32] COND TRUE 1 VAL [c=1, x=1, y=0, z=0] [L33] CALL __VERIFIER_assert(x*z - x - y + 1 == 0) VAL [\old(cond)=1] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L33] RET __VERIFIER_assert(x*z - x - y + 1 == 0) VAL [c=1, x=1, y=0, z=0] [L35] COND TRUE !(c < k) VAL [c=1, k=0, x=1, y=0, z=0] [L44] x = x * (z - 1) VAL [c=1, k=0, x=4294967295, y=0, z=0] [L46] CALL __VERIFIER_assert(1 + x - y == 0) VAL [\old(cond)=0] [L16] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L18] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 958.5ms, OverallIterations: 2, TraceHistogramMax: 2, EmptinessCheckTime: 11.7ms, AutomataDifference: 82.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 19 SDtfs, 6 SDslu, 54 SDs, 0 SdLazy, 21 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 31.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=1, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 14.8ms AutomataMinimizationTime, 1 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 14.1ms SsaConstructionTime, 54.1ms SatisfiabilityAnalysisTime, 102.5ms InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 30 SizeOfPredicates, 1 NumberOfNonLiveVariables, 89 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...