/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/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/lcm1_valuebound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-17 22:20:01,102 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-17 22:20:01,110 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-17 22:20:01,166 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-17 22:20:01,166 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-17 22:20:01,167 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-17 22:20:01,169 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-17 22:20:01,172 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-17 22:20:01,173 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-17 22:20:01,177 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-17 22:20:01,177 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-17 22:20:01,178 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-17 22:20:01,178 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-17 22:20:01,180 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-17 22:20:01,180 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-17 22:20:01,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-17 22:20:01,183 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-17 22:20:01,184 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-17 22:20:01,185 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-17 22:20:01,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-17 22:20:01,190 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-17 22:20:01,191 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-17 22:20:01,192 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-17 22:20:01,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-17 22:20:01,193 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-17 22:20:01,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-17 22:20:01,200 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-17 22:20:01,200 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-17 22:20:01,201 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-17 22:20:01,202 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-03-17 22:20:01,222 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-17 22:20:01,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-17 22:20:01,223 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-17 22:20:01,223 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-17 22:20:01,224 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-17 22:20:01,224 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-17 22:20:01,224 INFO L138 SettingsManager]: * Use SBE=true [2022-03-17 22:20:01,224 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-17 22:20:01,224 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-17 22:20:01,225 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-17 22:20:01,225 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-17 22:20:01,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-17 22:20:01,225 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-17 22:20:01,225 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-17 22:20:01,225 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-17 22:20:01,225 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-17 22:20:01,226 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-17 22:20:01,226 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-17 22:20:01,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-17 22:20:01,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 22:20:01,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-17 22:20:01,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-17 22:20:01,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-17 22:20:01,226 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-17 22:20:01,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-17 22:20:01,227 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-17 22:20:01,227 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-03-17 22:20:01,227 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-03-17 22:20:01,227 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-17 22:20:01,227 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-17 22:20:01,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-17 22:20:01,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-17 22:20:01,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-17 22:20:01,445 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-17 22:20:01,445 INFO L275 PluginConnector]: CDTParser initialized [2022-03-17 22:20:01,446 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/lcm1_valuebound20.c [2022-03-17 22:20:01,492 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd0f2ce0a/299d5dbb4f9848939ea21d48044f2a47/FLAGb785cd729 [2022-03-17 22:20:01,860 INFO L306 CDTParser]: Found 1 translation units. [2022-03-17 22:20:01,860 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/lcm1_valuebound20.c [2022-03-17 22:20:01,865 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd0f2ce0a/299d5dbb4f9848939ea21d48044f2a47/FLAGb785cd729 [2022-03-17 22:20:01,874 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd0f2ce0a/299d5dbb4f9848939ea21d48044f2a47 [2022-03-17 22:20:01,876 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-17 22:20:01,876 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-17 22:20:01,879 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-17 22:20:01,879 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-17 22:20:01,881 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-17 22:20:01,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 10:20:01" (1/1) ... [2022-03-17 22:20:01,882 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a562225 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:20:01, skipping insertion in model container [2022-03-17 22:20:01,882 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 10:20:01" (1/1) ... [2022-03-17 22:20:01,886 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-17 22:20:01,897 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-17 22:20:02,046 WARN L230 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/lcm1_valuebound20.c[552,565] [2022-03-17 22:20:02,071 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 22:20:02,078 INFO L203 MainTranslator]: Completed pre-run [2022-03-17 22:20:02,088 WARN L230 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/lcm1_valuebound20.c[552,565] [2022-03-17 22:20:02,105 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 22:20:02,114 INFO L208 MainTranslator]: Completed translation [2022-03-17 22:20:02,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:20:02 WrapperNode [2022-03-17 22:20:02,115 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-17 22:20:02,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-17 22:20:02,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-17 22:20:02,118 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-17 22:20:02,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:20:02" (1/1) ... [2022-03-17 22:20:02,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:20:02" (1/1) ... [2022-03-17 22:20:02,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:20:02" (1/1) ... [2022-03-17 22:20:02,135 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:20:02" (1/1) ... [2022-03-17 22:20:02,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:20:02" (1/1) ... [2022-03-17 22:20:02,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:20:02" (1/1) ... [2022-03-17 22:20:02,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:20:02" (1/1) ... [2022-03-17 22:20:02,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-17 22:20:02,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-17 22:20:02,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-17 22:20:02,156 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-17 22:20:02,157 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:20:02" (1/1) ... [2022-03-17 22:20:02,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 22:20:02,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 22:20:02,178 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-17 22:20:02,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-17 22:20:02,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-17 22:20:02,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-17 22:20:02,217 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-17 22:20:02,217 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-17 22:20:02,217 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-17 22:20:02,217 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-17 22:20:02,217 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-17 22:20:02,218 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-17 22:20:02,218 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-17 22:20:02,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-17 22:20:02,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-03-17 22:20:02,219 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-17 22:20:02,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-17 22:20:02,219 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-17 22:20:02,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-17 22:20:02,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-17 22:20:02,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-17 22:20:02,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-17 22:20:02,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-17 22:20:02,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-17 22:20:02,268 INFO L234 CfgBuilder]: Building ICFG [2022-03-17 22:20:02,269 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-17 22:20:02,385 INFO L275 CfgBuilder]: Performing block encoding [2022-03-17 22:20:02,406 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-17 22:20:02,406 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-03-17 22:20:02,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 10:20:02 BoogieIcfgContainer [2022-03-17 22:20:02,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-17 22:20:02,408 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-17 22:20:02,408 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-17 22:20:02,409 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-17 22:20:02,411 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 10:20:02" (1/1) ... [2022-03-17 22:20:02,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 10:20:02 BasicIcfg [2022-03-17 22:20:02,425 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-17 22:20:02,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-17 22:20:02,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-17 22:20:02,428 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-17 22:20:02,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 10:20:01" (1/4) ... [2022-03-17 22:20:02,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d48913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 10:20:02, skipping insertion in model container [2022-03-17 22:20:02,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:20:02" (2/4) ... [2022-03-17 22:20:02,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d48913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 10:20:02, skipping insertion in model container [2022-03-17 22:20:02,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 10:20:02" (3/4) ... [2022-03-17 22:20:02,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d48913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 10:20:02, skipping insertion in model container [2022-03-17 22:20:02,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 10:20:02" (4/4) ... [2022-03-17 22:20:02,430 INFO L111 eAbstractionObserver]: Analyzing ICFG lcm1_valuebound20.cqvasr [2022-03-17 22:20:02,432 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-17 22:20:02,433 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-17 22:20:02,470 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-17 22:20:02,493 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-17 22:20:02,493 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-17 22:20:02,507 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-03-17 22:20:02,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-03-17 22:20:02,511 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 22:20:02,511 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 22:20:02,512 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 22:20:02,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 22:20:02,517 INFO L85 PathProgramCache]: Analyzing trace with hash 2059041159, now seen corresponding path program 1 times [2022-03-17 22:20:02,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 22:20:02,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590922999] [2022-03-17 22:20:02,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 22:20:02,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 22:20:02,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 22:20:02,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 22:20:02,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 22:20:02,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 22:20:02,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 22:20:02,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 22:20:02,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 22:20:02,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-17 22:20:02,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 22:20:02,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-17 22:20:02,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 22:20:02,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-17 22:20:02,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 22:20:02,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-17 22:20:02,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 22:20:02,695 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-03-17 22:20:02,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 22:20:02,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590922999] [2022-03-17 22:20:02,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590922999] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 22:20:02,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 22:20:02,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-17 22:20:02,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128825194] [2022-03-17 22:20:02,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 22:20:02,700 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-17 22:20:02,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 22:20:02,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-17 22:20:02,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-17 22:20:02,720 INFO L87 Difference]: Start difference. First operand has 40 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) 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, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-17 22:20:02,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 22:20:02,810 INFO L93 Difference]: Finished difference Result 73 states and 121 transitions. [2022-03-17 22:20:02,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-17 22:20:02,812 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, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 43 [2022-03-17 22:20:02,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 22:20:02,817 INFO L225 Difference]: With dead ends: 73 [2022-03-17 22:20:02,817 INFO L226 Difference]: Without dead ends: 35 [2022-03-17 22:20:02,820 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-17 22:20:02,825 INFO L912 BasicCegarLoop]: 40 mSDtfsCounter, 22 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 22:20:02,826 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 43 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 22:20:02,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-03-17 22:20:02,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-03-17 22:20:02,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 13 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-03-17 22:20:02,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 46 transitions. [2022-03-17 22:20:02,865 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 46 transitions. Word has length 43 [2022-03-17 22:20:02,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 22:20:02,866 INFO L478 AbstractCegarLoop]: Abstraction has 35 states and 46 transitions. [2022-03-17 22:20:02,867 INFO L479 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, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-17 22:20:02,867 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 46 transitions. [2022-03-17 22:20:02,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-03-17 22:20:02,869 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 22:20:02,869 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 22:20:02,869 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-17 22:20:02,870 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 22:20:02,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 22:20:02,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1255008874, now seen corresponding path program 1 times [2022-03-17 22:20:02,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 22:20:02,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607234228] [2022-03-17 22:20:02,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 22:20:02,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 22:20:02,916 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 22:20:02,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [95485489] [2022-03-17 22:20:02,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 22:20:02,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 22:20:02,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 22:20:02,922 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 22:20:02,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-17 22:20:02,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 22:20:02,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-17 22:20:02,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 22:20:03,160 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-03-17 22:20:03,161 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-17 22:20:03,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 22:20:03,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607234228] [2022-03-17 22:20:03,162 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 22:20:03,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95485489] [2022-03-17 22:20:03,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95485489] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 22:20:03,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 22:20:03,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-17 22:20:03,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192773554] [2022-03-17 22:20:03,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 22:20:03,173 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-17 22:20:03,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 22:20:03,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-17 22:20:03,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-17 22:20:03,174 INFO L87 Difference]: Start difference. First operand 35 states and 46 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-17 22:20:03,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 22:20:03,260 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2022-03-17 22:20:03,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-17 22:20:03,260 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 43 [2022-03-17 22:20:03,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 22:20:03,261 INFO L225 Difference]: With dead ends: 52 [2022-03-17 22:20:03,262 INFO L226 Difference]: Without dead ends: 50 [2022-03-17 22:20:03,262 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-17 22:20:03,263 INFO L912 BasicCegarLoop]: 39 mSDtfsCounter, 11 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 22:20:03,263 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 147 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 22:20:03,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-03-17 22:20:03,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2022-03-17 22:20:03,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 28 states have internal predecessors, (34), 16 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-03-17 22:20:03,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 64 transitions. [2022-03-17 22:20:03,270 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 64 transitions. Word has length 43 [2022-03-17 22:20:03,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 22:20:03,270 INFO L478 AbstractCegarLoop]: Abstraction has 48 states and 64 transitions. [2022-03-17 22:20:03,271 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-17 22:20:03,271 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 64 transitions. [2022-03-17 22:20:03,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-03-17 22:20:03,272 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 22:20:03,272 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 22:20:03,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-17 22:20:03,488 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 22:20:03,488 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 22:20:03,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 22:20:03,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1780836073, now seen corresponding path program 1 times [2022-03-17 22:20:03,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 22:20:03,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157020283] [2022-03-17 22:20:03,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 22:20:03,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 22:20:03,501 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 22:20:03,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1592088164] [2022-03-17 22:20:03,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 22:20:03,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 22:20:03,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 22:20:03,506 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 22:20:03,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process